Year	Number of
1990	108400
1991	109000
1992	109500
1993	110100
1994	110600
1995	111000
1996	111400
1997	111800
1998	112100
1999	112400
2000	112800
2001	113100
2002	113400
2003	113800
2004	114100
2005	114300
2006	114500
2007	114700