Year	Total
1970	2280000
1971	2403000
1972	3045000
1973	4041000
1974	4672000
1975	5753000
1976	7246000
1977	6935000
1978	10755000
1979	17629000
1980	13250000
1981	15361000
1982	20043000
1983	28701000
1984	29214000
1985	32105000
1986	32837000
1987	37060000
1988	38743000
1989	41774000
1990	44417000
1991	47896000
1992	49872000
1993	50513000
1994	46441000
1995	52873000
1996	56106000
1997	64367000
1998	68927000
1999	77478000
2000	79010000
2001	74353000
2002	76476000
2003	80703000
2004	79153000
2005	79398000
2006	76020000
2007	76344000
2008	77237000
2009	71595000
2010	72371000
2011	74430000
2012	73350000
2013	74187000
2014	74966000
2015	76140000
2016	82170000