Year	Number
1992	206.9362261669954
1993	202.1625163826999
1994	201.91325301204822
1995	186.0446084724005
1996	163.40288924558587
1997	155.95141700404858
1998	136.7383222886698
1999	126.4477515367195
2000	118.86841676178052
2001	116.06665509460163
2002	110.93839031339033
2003	105.57730292691687
2004	99.7296322999279
2005	96.6817033561891
2006	94.96931407942239
2007	91.38612067403515
2008	89.76976069615662
2009	86.76046176046177