CORPORATE BOND ETF ACCOUNT

Following is a summary of information about the Corporate Bond ETF Account. Investors are advised to learn key data about an investment prior to making any investment decision.

Objective

The objective of this account is to seek investment results that correspond generally to the price and yield performance, before fees and expenses, of the Goldman Sachs InvesTop TM Index, or a similar corporate bond index. It invests solely in the Sentry Corporate Bond ETF Portfolio.

Investor Profile

The Corporate Bond ETF Account may be suitable for investors who are interested in pursuing price and yield performance of the Goldman Sachs InvesTop TM Index or a similar corporate bond index. Individuals must be willing and able to accept moderate changes in unit price both in the short and long term.

Investment Strategy

Sentry Corporate Bond ETF Portfolio invests primarily in one or more exchange traded funds (ETFs) that seek investment results that correspond to the price and yield performance, before fees and expenses, of the corporate bond market as represented ed by the Goldman Sachs InvesTop TM Index or a similar corporate bond index. The portfolio manager employs a passive investment strategy. Cash may be held in the portfolio to efficiently accommodate purchases and redemptions.

Investment Considerations

The principal value of the Corporate Bond ETF Account is subject to declines when interest rate levels rise or other factors (like defaults) that adversely affect the corporate bond market. This Account takes a passive approach to investing in corporate bonds and is appropriate for investors seeking a passive investment management approach to corporate bonds for a portion of their retirement portfolio.

PORTFOLIO DATA

Asset Allocation (as of 06-30-2008)     iShares (iBoxx $ Investment Grade) Corporate Bond Fund 93.90% Cash 6.10%   Key Facts (as of 06-30-2008)     Number of Holdings 101 Weighted Average Maturity 11.56 years Weighted Average Coupon 5.86% Effective Duration 6.67 years   Maturity Percentage of Fund (as of 06-30-2008)     Range   0-1 Years 0 %     1-5 Years 41.02 %     5-10 Years 34.06 %     10-15 Years 0 %     15-20 Years 0 %     20-25 Years 0 %     25 Years and Over 23.01 %     Average maturity is 11.56 years 98.09 %       Quality Ratings (as of 06-30-2008)       Aaa/AAA 8.22 % Aa1/AA+ 7.10 % Aa2/AA 9.78 % Aa3/AA- 12.65 % A1/A+ 19.91 % A2/A 7.73 % A3/A- 5.92 % Baa1/BBB+ 10.31 % Baa2/BBB 11.68 % Baa3/BBB- 4.79 % Total 98.09 % Sentry Corporate Bond ETF Portfolio* Average Annual Returns Annual Total Returns (as of 08-31-2008) (as of 12-31)           1 Month 0%     3 Months (1.01)%     YTD (1.11)%     1 year 0.41%     3 years (1.30)%     5 years N/A     10 years N/A                                     2006       (0.92)%     2007       1.86%