Year	Number of
1990	174400
1991	125000
1992	89930
1993	82070
1994	82060
1995	101000
1996	95260
1997	99720
1998	105700
1999	128000
2000	89610
2001	123300
2003	78090
2004	129400
2005	131900
2006	114400