31.085596 0.032169 4% Est. 1998 1.216653 0.821927 4% Est. 1989 18.806891 0.053172 3.8744% 1988 16.172510 0.061833 3.3218% 1987 16.304728 0.061332 3.1640% 1986 0.868437 1.151495 2.6144% 1985