Year	Total
1970	0
1971	71260
1972	99786
1973	99786
1974	208020
1975	250750
1976	298520
1977	273150
1978	2034000
1979	2524000
1980	2245000
1981	1891000
1982	2379000
1983	5737000
1984	8715000
1985	9629000
1986	12950000
1987	14002000
1988	14455000
1989	15645000
1990	15487000
1991	18390000
1992	19061000
1993	20743000
1994	21339000
1995	24164000
1996	30696000
1997	34955000
1998	35076000
1999	35665000
2000	41964000
2001	41419000
2002	42720000
2003	44711000
2004	51008000
2005	57510000
2006	56437000
2007	55383000
2008	57387000
2009	54972000
2010	50590000
2011	55967000
2012	55390000
2013	60538000
2014	61524000
2015	64110000
2016	66459000