Year	Total
1980	12690900000
1981	12676500000
1982	12662100000
1983	12640500000
1984	12614400000
1985	12587400000
1986	12559500000
1987	12529800000
1988	12780000000
1989	15300000000
1990	15302700000
1991	17820000000
1992	18630000000
1993	18630000000
1994	18687600000
1995	17415000000
1996	20700000000
1997	20700000000
1998	21690000000
1999	22500000000
2000	23400000000
2001	23490000000
2002	24021000000
2003	24813000000
2004	24750000000
2005	24822000000
2006	24165000000
2007	25317000000
2008	26649000000
2009	26649000000
2010	29781000000
2011	30258000000
2012	30402000000
2013	30618000000
2014	30618000000
2015	30150000000
2016	30150000000