Year	Total
1970	3137000
1971	3128000
1972	2899000
1973	3302000
1974	3653000
1975	4104000
1976	4185000
1977	4572000
1978	4698000
1979	5292000
1980	6462000
1981	7047000
1982	7686000
1983	7578000
1984	7776000
1985	7938000
1986	8514000
1987	9117000
1988	9666000
1989	10305000
1990	11007000
1991	11889000
1992	11664000
1993	13428000
1994	13689000
1995	14040000
1996	15255000
1997	15210000
1998	16020000
1999	18270000
2000	19350000
2001	20430000
2002	22149000
2003	27539000
2004	33065000
2005	35149000
2006	35913000
2007	36431000
2008	37302000
2009	37403000
2010	38100000
2011	38091000
2012	39446000
2013	38356000
2014	37710000
2015	37776000
2016	37378000