1, 1973 361141 172.1; 
2, 1974 326235 154.3;
3, 1975 342495 160.7; 
4, 1976 307252 143.1; 
5, 1977 301590 139.4; 
6, 1978 307603 141.1; 
7, 1979 340202 154.6; 
8, 1980 392083 174.0; 
9, 1981 396197 172.9; 
10, 1982 372477 160.9; 
11, 1983 330419 141.2; 
12, 1984 329232 139.4; 
13, 1985 340942 142.8; 
14, 1986 376064 156.0; 
15, 1987 365709 150.3; 
16, 1988 385934 157.0; 
17, 1989 410039 165.2; 
18, 1990 492671 198.1; 
19, 1991 548667 217.6; 
20, 1992 565575 221.7; 
21, 1993 581697 225.5; 
22, 1994 542529 208.4; 
23, 1995 504421 192.0; 
24, 1996 458458 172.8; 
25, 1997 414530 154.9; 
26, 1998 364776 135.0; 
27, 1999 338535 124.1; 
28, 2000 341831 121.5; 
29, 2001 354754 124.3; 
30, 2002 357822 124.3; 
31, 2003 347705 119.6; 
32, 2004 338587 115.3; 
33, 2005 368178 124.2; 
34, 2006 388897 129.9; 
35, 2007 385178 127.7;