4% Est. 1989 20.999580 0.047620 3.8744% 1988 1.802389 0.554819 3.3218% 1987 0.559585 1.787039 3.1640% 1986 13.878117 0.072056 2.6144% 1985 7.809856 0.128043 2.9715% 1984 1.816181 0.550606