Year	Number of
1990	37280
1991	40270
1992	41800
1993	43590
1994	45440
1995	47800
1996	50680
1997	55440
1998	61140
1999	68940
2000	80410
2001	99190
2002	99240
2003	106100
2004	110400
2005	114000
2006	113000
2007	112000