Year	Total
1965	5409000
1966	5620000
1967	6089000
1968	7620000
1969	8387000
1970	8864000
1971	9423000
1972	10578000
1973	11742000
1974	12390000
1975	13491000
1976	14902000
1977	15941000
1978	17058000
1979	17390000
1980	17126000
1981	16052000
1982	15165000
1983	15663000
1984	16076000
1985	16351000
1986	16879000
1987	17080000
1988	17504000
1989	17345000
1990	15843000
1991	14930000
1992	13597000
1993	14039000
1994	14808000
1995	14935000
1996	17470000
1997	18186000
1998	20806000
1999	21762000
2000	19961000
2001	19484000
2002	19857000
2003	20208000
2004	21554000
2005	22391000
2006	23336000
2007	24173000
2008	25286000
2009	25258000
2010	26706000
2011	26617000
2012	25691000
2013	23809000
2014	23875000
2015	24942000
2016	27202000