1988年

$13,146.10

$10,932.02

$3,279.61

$32,519.30

$26,984.10

$8,095.23

$28,229.52

$8,468.86

$13,083.20

$3,924.96

$7,862.50

$9,894.17

$2,968.25

$15,706.13

$4,711.84

$9,548.22

$2,864.47

$24,424.07

$7,327.22

$28,921.42

$8,676.43