Year	Total
1965	7147000
1966	7447000
1967	8429000
1968	8866000
1969	9895000
1970	10714000
1971	10876000
1972	11619000
1973	13066000
1974	12054000
1975	13657000
1976	15234000
1977	16501000
1978	18410000
1979	19598000
1980	18571000
1981	16662000
1982	16380000
1983	14644000
1984	14011000
1985	15031000
1986	16159000
1987	17770000
1988	16649000
1989	17192000
1990	18693000
1991	15566000
1992	12660000
1993	12121000
1994	11246000
1995	13494000
1996	12978000
1997	13659000
1998	11968000
1999	9476000
2000	9979000
2001	10604000
2002	10645000
2003	9425000
2004	10854000
2005	10509000
2006	10311000
2007	10338000
2008	10384000
2009	9186000
2010	8753000
2011	9117000
2012	9205000
2013	8402000
2014	8953000
2015	9157000
2016	9492000