Year	Number of
1990	35910
1991	36380
1992	35730
1993	35030
1994	35100
1995	35110
1996	34730
1997	36310
1998	37790
1999	39410
2000	42120
2001	41810
2002	43920
2003	44410
2004	44670
2005	45220
2006	43980
2007	42450