<PAGE>
VARIABLE ACCOUNT PERFORMANCE
----------------------------
Average Annual Total Returns for Periods Ending June 30, 1999
Assuming Contract Is Surrendered at End of Period
[LOGO] TRILLIUM
A VARIABLE ANNUITY
<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
Year-to- Since Inception
PORTFOLIOS Date* 1 Year 3 Year 5 Year 10 Year Inception Date
- ------------------------------------------------------------------------------------------------------------------------------------
<S> <C> <C> <C> <C> <C> <C> <C>
Seligman Communications and Information
Portfolio 20.07% 43.78% 29.40% -- -- 25.59% 10/4/94
Seligman Henderson Global Technology Portfolio 25.3 40 27.62 -- -- 25.36 5/1/96
Seligman Frontier Portfolio -6.73 -15.87 1.72 -- -- 12.46 10/4/94
Seligman Small-Cap Value Portfolio 42.47 28.27 -- -- -- 14.5 5/1/98
Seligman Henderson Global Smaller Companies
Portfolio 1.39 -7.68 2.02 -- -- 9.02 10/4/94
Seligman Capital Portfolio 7.48 14.43 15.44 18.28% 14.06% 13.32 6/21/88
Seligman Large-Cap Growth Portfolio (new portfolio) 3.90* 5/1/99
Seligman Henderson Global Growth Opportunities
Portfolio 13.5 14.82 13.98 -- -- 13.15 5/1/96
Seligman Large-Cap Value Portfolio 10.37 10.15 -- -- -- 7.68 5/1/98
Seligman Common Stock Portfolio 9.88 19.68 19.6 19.64 14.8 14.34 6/21/88
Seligman Henderson International Portfolio 3.73 0.97 8.33 7.98 -- 8.34 5/3/93
Seligman Income Portfolio -0.1 1.14 7.07 7.73 7.58 7.69 6/21/88
Seligman High-Yield Bond Portfolio -0.55 -5.76 6.46 -- -- 7.34 5/1/95
Seligman Bond Portfolio -5.03 -1.75 3.83 4.57 4.61 4.61 6/21/88
Seligman Cash Management Portfolio Current
Yield 3.39%a 1.61 3.56 3.72 3.63 3.45 3.52 6/21/88
</TABLE>
* Not annualized.
+ Annualized for the seven-day period ending June 30, 1999. The current yield
figure shown more closely reflects the current earnings of the Portfolio than
total return figures. Although Seligman Cash Management Portfolio seeks to
preserve the value of investments at $1.00 per share, it is possible to lose
money by investing in the Portfolio.
Trillium Fixed Account's rate for the five year Guarantee Period was 4.50% as
of June 30, 19999. Rates for each Guarantee Period will be different, and are
subject to change on a monthly basis. The 3,5,7, and 10 year Guarantee Periods
are currently not approved in all states. Please call 800-221-2783 for state
approval and the current rates on these Guarantee Periods.
Performance quoted represents past performance, and the investment return and
principal value of an investment will fluctuate so that units, when
surrendered, may be worth more or less than their original cost. Performance
of the variable portfolios reflects the performance of Seligman Portfolios,
Inc., the underlying investment vehicle for the Trillium Variable Account,
adjusted for the current fees and charges (excluding CDSC) associated with
Trillium. For performance figures with CDSC, please see reverse side. The
variable account commenced operations on 5/3/93. The fixed account is held in
the general account of Canada Life Insurance Company of America (CLICA) and
provides a guarantee, by CLICA, against loss of principal, and guarantees
payment of a specified current rate of interest. Please contact your financial
advisor or call Seligman Advisors at 800-221-2783 for a prospectus containing
full details including information of fees and charges. Please read the
prospectus carefully before investing or sending money.
There are specific risks associated with global technology investing, such as
currency fluctuations, foreign taxation, differences in financial reporting
practices, and changes in political conditions. A portfolio that concentrates
its investments in one sector of the economy may be subject to greater share
price fluctuations than a more diversified portfolio. There are specific risks
associated with global investing, such as currency fluctuations, foreign
taxation, differences in financial reporting practices, and changes in
political conditions. A portfolio with fewer holdings, such as Seligman Large-
Cap Value Portfolio and Seligman Small-Cap Value Portfolio, may be subject to
greater volatility than a portfolio with a greater number of holdings. High-
yield bonds are subject to a greater risk of loss of principal and interest
than higher-rated investment grade bonds. Purchasers should carefully assess
the risks associated with an investment in Seligman High-Yield Bond Portfolio.
<PAGE>
VARIABLE ACCOUNT PERFORMANCE
----------------------------
Average Annual Total Returns for Periods Ending June 30, 1999
Assuming Contract Continues
<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
Year-to- Since Inception
Portfolios Date* 1 Year 3 Year 5 Year 10 Year Inception Date
- ------------------------------------------------------------------------------------------------------------------------------------
<S> <C> <C> <C> <C> <C> <C> <C>
Seligman Communications and Information
Portfolio 14.67% 38.38% 28.50% -- -- 25.26% 10/4/94
Seligman Henderson Global Technology
Portfolio 19.9 34.6 26.69 -- -- 24.48 5/1/96
Seligman Frontier Portfolio -12.13 -21.27 0.25 -- -- 11.97 10/4/94
Seligman Small-Cap Value Portfolio 37.07 22.87 -- -- -- 9.95 5/1/98
Seligman Henderson Global Smaller
Companies Portfolio -4.01 -13.08 0.56 -- -- 8.46 10/4/94
Seligman Capital Portfolio 2.08 9.03 14.31 18.00% 14.06% 13.32 6/21/88
Seligman Large-Cap Growth Portfolio (new portfolio) (1.50)* 5/1/99
Seligman Henderson Global Growth --
Opportunities Portfolio 8.1 9.42 12.81 -- -- 12.05 5/1/96
Seligman Large-Cap Value Portfolio 4.97 4.75 -- -- 3.08 5/1/98
Seligman Common Stock Portfolio 4.48 14.28 18.54 19.38 14.8 14.34 6/21/88
Seligman Henderson International Portfolio -1.67 -4.43 7.04 7.58 - 8.14 5/3/93
Seligman Income Portfolio -5.5 -4.26 5.74 7.33 7.58 7.69 6/21/88
Seligman High-Yield Bond Portfolio -5.95 -11.16 5.12 -- -- 6.64 5/1/95
Seligman Bond Portfolio -10.43 -7.15 2.42 4.12 4.61 4.61 6/21/88
Seligman Cash Management Portfolio
Current Yield 3.39%a -3.79 -1.84 2.3 3.15 3.45 3.52 6/21/88
</TABLE>
* Not annualized.
+ Annualized for the seven-day period ending June 30, 1999. The
current yield figure shown more closely reflects the current earnings of the
Portfolio than total return figures. Although Seligman Cash Management
Portfolio seeks to preserve the value investments at $1.00 per share, it is
possible to lose money by investing in the Portfolio.
Trillium Placed Account's rate the one year Guarantee Period was 4.50% as of
June 30, 1999. Rates for each Guarantee Period will be different and are
subject to change on a monthly basis. The 3,5,7, and 10 year Guarantee Periods
are currently approved in all states. Please call 800-221-2783 for state
approval and the current rates on these Guarantee Periods.
Issued by: Canada Life Insurance Company of America, 6291 Powers Ferry Road,
N.W. Atlanta, GA 30339
Distributed by: Seligman Advisors, Inc., 100 Park Avenue, New York, NY 10017.
(800) 221-2783
Shares of the Trillium portfolios' net deposits or obligations of, are
guaranteed or endorsed by, any bank. Shares are not issued by the Federal
Deposit Insurance Corporation, the Federal Reserve Board, or any other federal
agency, and are subject to market fluctuations including possible loss of
principal.
Performance quoted represent performance, and the investment return and
principal value of an investment will fluctuate so that units, when surrendered,
may be worth more or less than their original cost. Performance of the variable
portfolios reflects the performance of Seligman Portfolios, Inc., the underlying
investment vehicle for the Trillium Variable Account, and is adjusted for
Trillium's current fees and charges, including the maximum CDSC_____. Trillium's
CDSC for current premiums (premiums paid during the current and previous six
policy years) starts at 6% and decreases in steps, depending on the number of
policy years since the premium was paid, allows: less than two years, 6% at
least two, but less than four, 5%, at least four, but less than five, 4%, at
least five but less than six, 3%; at least six, but less than seven, 2% at least
seven, no charge. The variable ________ commenced operations on 5/3/93. The
fixed account is held in the general account of Canada Life Insurance Company of
America (CLICA) and provides a guarantee, but CLICA, against loss of principal
and guarantees payment of a specified current rate of interest. Please contact
your financial advisor or call Seligman Advisors at 800-221-2783 for a
prospectus containing full details including information and fees and charges.
Please read the prospectus carefully before investing or sending money.
