Year	Number
1992	194.77852742739807
1993	179.50810117729338
1994	168.25249477837085
1995	166.10670219544693
1996	158.8469296279695
1997	155.5962691538974
1998	153.069569541913
1999	150.0191791331032
2000	148.1814198071867
2001	147.39881244212017
2002	147.45006259184674
2003	147.39733478379114
2004	147.2211658608138
2005	83.88671875
2006	99.22337478955086
2007	113.65156418554476
2008	116.07354047951833
2009	114.95197438633937