year    start
2005    10729.43
2004    10409.85
2003    8607.52
2002    10073.4
2001    10646.15
2000    11357.51
1999    9184.27
1998    7965.04
1997    6442.49
1996    5177.45
1995    3838.48
1994    3756.6
1993    3309.22
1992    3172.41
1991    2610.64
1990    2810.15
1989    2144.64
1988    2015.25
1987    1927.31
1986    1537.73
1985    1198.87
1984    1252.74
1983    1027.04