Year	Number
1992	511500
1993	511479
1994	498743
1995	469301
1996	441657
1997	405784
1998	374166
1999	347247
2000	318900
2001	413625
2002	404259
2003	390838
2004	370404
2005	352252
2006	344263
2007	336848
2008	335473
2009	333529