Year	Number of
1990	116500
1991	141400
1992	153400
1993	126100
1994	131700
1995	118500
1996	84800
1997	68120
1998	72810
1999	63170
2000	67880
2001	76420
2002	74860
2003	90610
2004	90300
2005	76390
2006	75340