1987
62.3
48.5
52.3
60.7
78.8
211
639
690
415
180
109
75.8
1988
58.3
50.7
50.2
64.6
94.9
214
675
869
451
168
94.2
72.4
1989
64.7
54.8
56.4
67.1
139
267
528
718
457
184
95.4
65.4
1990
51.1
45.4
44.2
59.0
97.5
258
590
548
418
179
96.4
64.8
1991
51.4
42.7
42.7
51.8
95.5
216
429
653
472
151
90.5
63.6
1992
50.9
45.2
44.2
49.4
67.3
163
293
581
373
163
88.9
60.3
1993
48.3
42.1
38.0
47.6
85.3
163
380
661
466
190
95.2
63.5
1994
48.1
42.2
44.6
45.6
76.9
231
418
620
384
145
80.1
56.9
1995
46.2
40.7
45.3
56.0
212
560
673
644
385
158
108
67.3


















































































































































































































































































































































