Year	Number of
1990	5044000
1991	5069000
1992	5085000
1993	5088000
1994	5071000
1995	5010000
1996	5030000
1997	4965000
1998	4921000
1999	4894000
2000	4639000
2001	4373000
2002	4209000
2003	3834000
2004	3476000
2005	3396000
2006	3338000
2007	3305000