Enron's stock increased from the start of the 1990s until year-end 1998 by 311%, only modestly higher than the average rate of growth in the Standard & Poor 500 index. However, the stock increased by 56% in 1999 and a further 87% in 2000, compared to a 20% increase and a 10% decrease for the index during the same years. By December 31, 2000, Enron's stock was priced at $83.13 and its market capitalization exceeded $60 billion, 70 times earnings and six times book value, an indication of the stock market's high expectations about its future prospects. In addition, Enron was rated the most innovative large company in America in "Fortune"'s Most Admired Companies survey.