| 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 | |
| 46.86 |
9.75 |
14.46 |
22.65 |
| 58.97 |
11.56 |
17.68 |
29.73 |
| 74.87 |
14.99 |
21.68 |
38.2 |
| 85.99 |
23.76 |
17.59 |
44.64 |
| 93.77 |
25.01 |
19.57 |
49.19 |
| 104.24 |
28.06 |
23.1 |
53.08 |
| 125.82 |
35.66 |
27.96 |
62.2 |
| 172.27 |
55.99 |
40.74 |
75.54 |
| 203.49 |
67.15 |
44.71 |
91.63 |
| 242.58 |
87.8 |
45.29 |
109.49 |
| 325.88 |
132.28 |
51.23 |
142.37 |
| 346.01 |
141.8 |
51.91 |
152.3 |
| 353.75 |
153.27 |
48.55 |
151.93 |
| 404 |
184.56 |
55.79 |
163.65 |
| 493.87 |
230.23 |
73.72 |
189.92 |
| 695.06 |
334.51 |
101.47 |
259.08 |
| 1020.1 |
553.99 |
103.66 |
362.45 |
| 1325.7 |
712.47 |
128.49 |
484.74 |
| 1599.37 |
855.92 |
163.55 |
579.9 |
| 1757.17 |
949.63 |
174.1 |
633.44 |
| 1909.14 |
1035.97 |
183.57 |
689.59 |
| 2075.75 |
1132 |
201.23 |
742.52 |
| 2298.76 |
1255.15 |
225.38 |
818.23 |
| 2555.46 |
1434.82 |
247.57 |
873.07 |
| 2877.52 |
1650.65 |
286.77 |
940.1 |
| 3157.09 |
1999.88 |
329.46 |
827.74 | |
