220
1973
339
16.0
1974
194
16.0
1975
441
14.6
1976
172
12.2
1977
248
10.1
1978
205
13.0
1979
165
12.5
1980
300
10.3
1981
336
12.0
1982
316
15.2
1983
344
13.4
1984
318
16.5
1985
314
11.6
1986
184
14.4
1987
130
13.2
1988
237
13.4
1989
155
13.2
1990
175
12.2
1991
184
14.2
1992
203
11.4
1993
147
12.2
1994
184
9.50
1995
154
12.7
1996
203
13.7
1997
107
11.8
1998
128
12.7
1999
184
12.2
2000
226
13.7
2001
182
11.0
2002
184
13.9
2003
180
11.4
2004
165
9.30
2005
177
13.0
2006
196
10.1
