| 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 | |
| 164.19 |
112.77 |
6.69 |
44.73 |
| 181.29 |
121.5 |
7.62 |
52.17 |
| 190.76 |
126.23 |
8.25 |
56.28 |
| 192.29 |
121.27 |
9.25 |
61.77 |
| 201.83 |
120.49 |
11.49 |
69.85 |
| 212.49 |
123.02 |
13.58 |
75.89 |
| 232.67 |
127.59 |
16.67 |
88.41 |
| 293.54 |
132.54 |
33.45 |
127.55 |
| 341.2 |
135.18 |
68.14 |
137.88 |
| 369.21 |
138.07 |
82.52 |
148.62 |
| 403.96 |
136.5 |
96.25 |
171.21 |
| 408.99 |
146.51 |
92.75 |
169.73 |
| 400.65 |
144.43 |
100.75 |
155.47 |
| 456 |
144.95 |
136.25 |
183.8 |
| 546.81 |
167.52 |
158.83 |
220.46 |
| 617.69 |
179.58 |
160.48 |
277.63 |
| 685.41 |
181.55 |
171.63 |
332.23 |
| 874.29 |
186.75 |
245.16 |
442.38 |
| 900.8 |
178.92 |
266.22 |
455.66 |
| 914.54 |
172.22 |
262.32 |
480 |
| 897.88 |
173.28 |
257.11 |
467.49 |
| 1004.1 |
171.8 |
256.9 |
575.4 |
| 1199.74 |
187.16 |
280.02 |
732.56 |
| 1371.6 |
206.48 |
282.53 |
882.59 |
| 1616.61 |
230.41 |
293.6 |
1092.6 |
| 2047.48 |
252.92 |
313.7 |
1480.86 | |
