| 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 | |
| 82.6 |
82.6 |
1334.7 |
294.9 |
42.27 |
41.59 |
| 84.8 |
84.8 |
1550 |
345.6 |
56.87 |
55.95 |
| 83 |
83 |
1403.8 |
324 |
70.55 |
69.48 |
| 82.7 |
82.7 |
1344.6 |
288.6 |
62.78 |
62 |
| 82.7 |
82.7 |
1383.2 |
262.6 |
67.11 |
66.24 |
| 80.6 |
80.6 |
1387.3 |
229.3 |
68.53 |
67.59 |
| 78.4 |
78.4 |
1326.2 |
197.9 |
68.88 |
67.8 |
| 76.1 |
76.1 |
1368.8 |
176.2 |
76.6 |
75.57 |
| 75.81 |
75.81 |
1403.31 |
172.21 |
81.11 |
80 |
| 74.73 |
74.73 |
1278.69 |
175.98 |
76.19 |
75.01 |
| 71.11 |
71.11 |
1228.05 |
180.02 |
78.47 |
77.12 |
| 69.29 |
69.29 |
1213.19 |
187.47 |
77.24 |
75.87 |
| 68.01 |
68.01 |
1170 |
185.07 |
77.88 |
76.33 |
| 65.05 |
65.05 |
1135.49 |
181.36 |
78.05 |
76.41 |
| 60.5 |
60.5 |
1188.97 |
183.26 |
83.08 |
80.97 |
| 54.07 |
54.07 |
1061.04 |
191.38 |
80.64 |
78.94 |
| 50.72 |
50.72 |
989.84 |
205.98 |
78.95 |
76.46 |
| 50.32 |
50.32 |
964.3 |
218.63 |
80.17 |
77.38 |
| 49.48 |
49.48 |
892.68 |
221.31 |
76.31 |
73.47 |
| 46.36 |
46.36 |
1010.06 |
214.55 |
81.33 |
78.4 |
| 43.52 |
43.52 |
1040.56 |
207.58 |
84.48 |
81.38 |
| 40.64 |
40.64 |
1024.36 |
218.95 |
85.87 |
82.55 |
| 38.95 |
38.95 |
1146.88 |
233.51 |
101.57 |
98.03 |
| 39.25 |
39.25 |
1175.1 |
245.02 |
111.28 |
107.39 |
| 39.63 |
39.63 |
1139.17 |
258.61 |
119.4 |
115.09 |
| 38.9 |
38.9 |
1132.38 |
262.9 |
122.22 |
117.24 |
| 39.25 |
39.25 |
1125.27 |
256.72 |
131.72 |
126.43 |
| 35.54 |
35.54 |
1213.15 |
222.35 |
130.44 |
125.14 | |