Year	Number of
1990	1407
1991	1440
1992	1473
1993	1506
1994	1538
1995	1570
1996	1602
1997	1633
1998	1663
1999	1694
2000	1724
2001	1754
2002	1784
2003	1814
2004	1844
2005	1874
2006	1904
2007	1934