| 1986 |
| 1987 |
| 1988 |
| 1989 |
| 1990 |
| 1991 |
| 1992 |
| 1993 |
| 1994 |
| 1995 |
| 1996 |
| 1997 |
| 1998 |
| 1999 |
| 2000 |
| 2001 |
| 2002 |
| 2003 | |
| 116.1 |
109.2 |
117.6 |
110.6 |
118.7 |
111.7 |
| 128.8 |
109.2 |
129.2 |
109.6 |
127.5 |
108.1 |
| 158.8 |
109.1 |
160 |
110 |
155.6 |
106.9 |
| 175.2 |
103.1 |
176 |
103.6 |
171.6 |
101 |
| 191.5 |
110.4 |
194.4 |
112 |
183.4 |
105.7 |
| 209 |
114.1 |
210.7 |
115 |
200.9 |
109.7 |
| 248.8 |
124.4 |
251.9 |
126 |
234.1 |
117.1 |
| 339.3 |
139.7 |
340 |
140 |
321.1 |
132.2 |
| 482.9 |
159.4 |
492.2 |
162.4 |
436.1 |
143.9 |
| 571.1 |
161.1 |
567 |
160 |
532.4 |
150.2 |
| 639.6 |
164.4 |
630.8 |
162.1 |
598.9 |
153.9 |
| 723.6 |
178.6 |
721.6 |
178.1 |
656 |
161.9 |
| 798.9 |
196.3 |
816.6 |
200.6 |
675.1 |
165.9 |
| 917.3 |
226.6 |
953 |
235.4 |
768.3 |
189.8 |
| 1071.1 |
262.1 |
1123.6 |
275 |
885.1 |
216.6 |
| 1360.7 |
333.7 |
1543.7 |
378.6 |
1053.3 |
258.3 |
| 1572.6 |
389.2 |
1810.4 |
448.1 |
1240.1 |
306.9 |
| 1799.2 |
436.8 |
2173.9 |
527.8 |
1416.9 |
344 | |
