| 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 | |
| 3100 |
8908 |
28.34 |
13400 |
10095 |
| 7067 |
14951 |
43.39 |
20601 |
17473 |
| 5235 |
14605 |
41.97 |
20737 |
17473 |
| 6409 |
14916 |
44.52 |
22209 |
18212 |
| 6120 |
15440 |
47.19 |
23198 |
18839 |
| 11511 |
20043 |
60.65 |
28735 |
24074 |
| 12468 |
21902 |
65.41 |
30801 |
26180 |
| 12375 |
24286 |
71.9 |
34210 |
29012 |
| 13366 |
25980 |
81.25 |
37548 |
31680 |
| 12590 |
26048 |
80.32 |
38205 |
32261 |
| 12153 |
26277 |
74.85 |
38955 |
32703 |
| 11824 |
26684 |
75.16 |
39859 |
33556 |
| 11242 |
28308 |
85.72 |
41706 |
34425 |
| 9860 |
29035 |
94.3 |
41052 |
34024 |
| 9179 |
29396 |
97.63 |
43522 |
35887 |
| 11705 |
31178 |
99.33 |
48006 |
39453 |
| 11794 |
31530 |
99.43 |
49377 |
40220 |
| 11915 |
32654 |
98.95 |
50389 |
40678 |
| 12920 |
34637 |
100.21 |
54459 |
43503 |
| 14068 |
37270 |
105.9 |
58867 |
46500 |
| 14864 |
38637 |
108.38 |
61549 |
47902 |
| 15073 |
41271 |
112.45 |
67773 |
51168 |
| 12501 |
43167 |
115.13 |
72593 |
48195 |
| 11920 |
44483 |
117.61 |
75000 |
49442 |
| 11560 |
44651 |
117.96 |
83022 |
54056 |
| 11367 |
46490 |
127.85 |
91772 |
58732 | |
