| 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 | |
| 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 |
| 772.11 |
371.59 |
112.72 |
287.8 |
| 1133.18 |
615.4 |
115.15 |
402.63 |
| 1472.66 |
791.45 |
142.73 |
538.48 |
| 1776.67 |
950.8 |
181.68 |
644.19 |
| 1951.96 |
1054.9 |
193.4 |
703.66 |
| 2120.78 |
1150.81 |
203.92 |
766.05 |
| 2305.86 |
1257.49 |
223.54 |
824.83 |
| 2553.59 |
1394.29 |
250.36 |
908.94 |
| 2839.59 |
1594.35 |
275.1 |
970.14 |
| 3166.15 |
1816.22 |
315.53 |
1034.4 |
| 3511.26 |
2224.23 |
366.42 |
920.61 |
| 4055.5 |
2573.23 |
452.89 |
1029.38 |
| 4631.69 |
3046.71 |
460.59 |
1124.39 | |
