Year	Number of
1990	3758000
1991	3735000
1992	3708000
1993	3676000
1994	3643000
1995	3676000
1996	3556000
1997	3499000
1998	3447000
1999	3441000
2000	3421000
2001	3388000
2002	3339000
2003	3132000
2004	2874000
2005	2707000
2006	2637000
2007	2582000