Year	Number of
1990	1462
1991	1537
1992	1596
1993	1643
1994	1691
1995	1749
1996	1822
1997	1907
1998	2001
1999	2099
2000	2195
2001	2288
2002	2378
2003	2467
2004	2558
2005	2653
2006	2753
2007	2856