Year	Number of
1990	123800
1991	188000
1992	225900
1993	156100
1994	140100
1995	100100
1996	84620
1997	65860
1998	72090
1999	75100
2000	74320
2001	188100
2002	184900
2003	164300
2004	128400
2005	99060
2006	91350