Year	Total
1971	2410000
1972	2339000
1973	2492000
1974	2397000
1975	2864000
1976	2996000
1977	3269000
1978	4056000
1979	3912000
1980	4003000
1981	4263000
1982	4160000
1983	4297000
1984	4640000
1985	4389000
1986	4631000
1987	4081000
1988	4977000
1989	5342000
1990	6161000
1991	6258000
1992	6009000
1993	6060000
1994	7113000
1995	6242000
1996	5927000
1997	6420000
1998	7137000
1999	6952000
2000	6403000
2001	6337000
2002	5512000
2003	6478000
2004	7285000
2005	8747000
2006	9778000
2007	10370000
2008	9479000
2009	8961000
2010	9839000