Year	Number of
1990	99490
1991	184200
1992	184000
1993	129400
1994	127200
1995	187100
1996	135900
1997	180900
1998	185500
1999	66840
2000	107600
2001	206200
2002	195700
2003	164700
2004	116900
2005	118200
2006	120100