| 1978 |
| 1979 |
| 1980 |
| 1981 |
| 1982 |
| 1983 |
| 1984 |
| 1985 |
| 1986 |
| 1987 |
| 1988 |
| 1989 |
| 1990 |
| 1991 |
| 1992 |
| 1993 |
| 1994 |
| 1995 |
| 1996 |
| 1997 |
| 1998 |
| 1999 |
| 2000 |
| 2001 |
| 2002 |
| 2003 |
| 2004 | |
| 27.45 |
|
17.43 |
6.07 |
1.4 |
0.23 |
0.22 |
| 25.87 |
|
17.74 |
5.26 |
1.3 |
0.28 |
0.37 |
| 31.13 |
|
17.34 |
3.81 |
1.71 |
0.3 |
0.5 |
| 34.34 |
|
17.12 |
2.8 |
1.97 |
0.21 |
0.63 |
| 36.64 |
|
18.88 |
3.04 |
1.76 |
0.27 |
0.71 |
| 41.79 |
|
21.94 |
3.56 |
1.96 |
0.36 |
1.25 |
| 46.67 |
|
28.8 |
4.38 |
2.54 |
0.6 |
1.79 |
| 58.25 |
|
37.4 |
4.77 |
3.06 |
0.46 |
2.88 |
| 68.61 |
|
50.96 |
5.56 |
3.03 |
0.51 |
4.21 |
| 76.36 |
|
51.24 |
4.28 |
3.64 |
0.43 |
3.4 |
| 85.55 |
|
63.14 |
4.05 |
4.43 |
0.5 |
4.76 |
| 98.21 |
|
74.77 |
3.87 |
4.04 |
0.59 |
5.19 |
| 101.59 |
|
80.23 |
3.84 |
4.07 |
0.77 |
5.48 |
| 108.94 |
|
88.43 |
4.22 |
5.06 |
0.91 |
5.58 |
| 118.36 |
|
95.31 |
5.41 |
6.26 |
0.96 |
6.32 |
| 166.64 |
|
125.04 |
6.85 |
10.64 |
1.11 |
8.49 |
| 209.39 |
94.63 |
153.03 |
7.18 |
10.72 |
1.32 |
11.06 |
| 248.5 |
116.82 |
180.29 |
7.83 |
14.95 |
1.78 |
13.1 |
| 291.75 |
139.63 |
213.71 |
9.53 |
18.5 |
2.2 |
16.01 |
| 340.52 |
157.33 |
240.16 |
10.76 |
21.29 |
2.94 |
19.6 |
| 401.8 |
198.1 |
286.81 |
15.81 |
19.45 |
4.09 |
22.97 |
| 477.4 |
245.47 |
344.04 |
21.29 |
24.1 |
5.59 |
27.18 |
| 658.42 |
342.77 |
431.3 |
28 |
26.34 |
9.2 |
33.54 |
| 917.76 |
418 |
597.3 |
44.64 |
43.43 |
12.4 |
43.82 |
| 1166.58 |
566.85 |
749.9 |
55.97 |
46.92 |
16.08 |
51.43 |
| 1468.89 |
706.56 |
896.77 |
63.3 |
48.9 |
19.53 |
59.61 |
| 1805.16 |
900.99 |
1062.94 |
73.29 |
53.76 |
25.24 |
62.19 | |