| 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 | |
| 35.79 |
7.73 |
21 |
48.9 |
| 44.92 |
11.79 |
31 |
54.91 |
| 60.74 |
16.95 |
44 |
73.3 |
| 74.26 |
21.47 |
55 |
85.85 |
| 88.2 |
28.52 |
73 |
97.88 |
| 108.14 |
37.34 |
94 |
109.42 |
| 143.17 |
49.58 |
124 |
161.39 |
| 185.66 |
67.73 |
168 |
210.81 |
| 248.68 |
97.92 |
241 |
288.97 |
| 306.44 |
129.12 |
313 |
365.87 |
| 354.26 |
144.03 |
345 |
433.41 |
| 441.13 |
214.98 |
511 |
505.48 |
| 606.01 |
306.74 |
724 |
618.14 |
| 789.64 |
402.09 |
942 |
749.93 |
| 1036.72 |
514.44 |
1195 |
972.09 |
| 1316.53 |
664.64 |
1533 |
1247.76 |
| 1910.98 |
990.26 |
2269 |
1627.87 |
| 2623.6 |
1377.22 |
3138 |
2103.65 |
| 3400.19 |
1844.74 |
4180 |
2584.09 |
| 4297.07 |
2293.55 |
5172 |
3273.73 |
| 5264.21 |
2847.29 |
6390 |
3897.12 |
| 6273.15 |
3261.34 |
7287 |
4650.5 |
| 7299.57 |
3594.65 |
7681 |
5423.52 |
| 8823.12 |
4262.38 |
9074 |
6482.22 |
| 11242.84 |
5233.73 |
11063 |
8612.81 |
| 14758.15 |
6452.21 |
13545 |
12014.28 |
| 17236.62 |
7364.06 |
15331 |
14350.75 |
| 20494.16 |
8746.02 |
17856 |
16557.67 | |
