Year	Total
1965	19577000
1966	19745000
1967	19913000
1968	20083000
1969	20255000
1970	21040000
1971	21282000
1972	22742000
1973	24121000
1974	25289000
1975	19280000
1976	22474000
1977	26030000
1978	28123000
1979	34012000
1980	27724000
1981	33373000
1982	37159000
1983	41230000
1984	45973000
1985	46756000
1986	45978000
1987	48767000
1988	50068000
1989	48124000
1990	51209000
1991	53534000
1992	51812000
1993	52123000
1994	62968000
1995	60223000
1996	62151000
1997	63223000
1998	67385000
1999	69853000
2000	72076000
2001	75909000
2002	78236000
2003	82906000
2004	89568000
2005	94221000
2006	98373000
2007	104400000
2008	114390000
2009	125910000
2010	137100000
2011	139120000
2012	146200000
2013	147310000
2014	159780000
2015	166640000
2016	167930000