From The little book of common sense investing by John Bogle.

"Thus, the recent era not only has failed to erode, but has nicely enhanced the lifetime record of the world’s first index fund—now known as Vanguard 500 Index Fund. Let me be specific: at a dinner on September 20, 2006, celebrating the 30th anniversary of the fund’s initial public offering, the counsel for the fund’s underwriters reported that he had purchased 1,000 shares at the original offering price of $15.00 per share—a $15,000 investment. He proudly announced that the value of his holding that evening (including shares acquired through reinvesting the fund’s dividends and distributions over the years) was $461,771. "