Year	Number of
1990	212600
1991	246400
1992	229400
1993	234900
1994	278200
1995	293600
1996	278000
1997	343200
1998	395200
1999	392800
2000	369300
2001	414100
2002	462700
2003	463300
2004	395000
2005	398400
2006	400100