| 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 |
| 2005 | |
| 87.52 |
81.69 |
3.56 |
5.83 |
4.9 |
| 81.13 |
74.77 |
3.9 |
6.36 |
5.19 |
| 81.79 |
75.03 |
6.6 |
6.76 |
6.67 |
| 84.28 |
76.85 |
4.13 |
7.43 |
6.17 |
| 87.69 |
78.91 |
4.82 |
8.78 |
7.43 |
| 83.25 |
73.46 |
6.21 |
9.79 |
8.32 |
| 95.28 |
83.26 |
7.86 |
12.02 |
10.29 |
| 104.82 |
89.04 |
9.6 |
15.78 |
13.73 |
| 117.21 |
97.36 |
10.57 |
19.85 |
17.74 |
| 124.98 |
102.84 |
11.86 |
22.14 |
19.65 |
| 128.2 |
104.31 |
12.33 |
23.89 |
21.28 |
| 129.2 |
104.5 |
13.13 |
24.7 |
22.08 |
| 138.98 |
113.17 |
13.81 |
25.8 |
23 |
| 151.09 |
123.53 |
15.2 |
27.56 |
24.75 |
| 169.75 |
140.2 |
17.34 |
29.54 |
26.68 |
| 189.29 |
156.06 |
19.05 |
33.23 |
29.92 |
| 258.02 |
222.3 |
24.68 |
35.72 |
32.07 |
| 318.07 |
278.7 |
31.69 |
39.37 |
34.43 |
| 342.14 |
299.23 |
39.51 |
42.91 |
37 |
| 377.68 |
331.97 |
38.9 |
45.71 |
38.66 |
| 422.73 |
372.8 |
46.49 |
49.93 |
42.62 |
| 442.73 |
389.41 |
58.17 |
53.32 |
45.61 |
| 469.51 |
410.46 |
70.88 |
59.05 |
51.42 |
| 472.85 |
406.96 |
77.66 |
65.89 |
58.17 |
| 480.68 |
409.33 |
85.15 |
71.35 |
63.21 |
| 482.82 |
406 |
91.85 |
76.82 |
68.26 |
| 493.53 |
414.98 |
92.94 |
78.55 |
69.45 |
| 483.77 |
402.37 |
88.11 |
81.4 |
72.07 | |
