Year Total 1970 904500 1971 904500 1972 992700 1973 1422000 1974 1168200 1975 1802700 1976 984600 1977 1395900 1978 1331100 1979 3925800 1980 4266900 1981 3890700 1982 4549500 1983 4711500 1984 5337000 1985 4914000 1986 5220000 1987 5049000 1988 5274000 1989 5580000 1990 5670000 1991 6867000 1992 11358000 1993 12150000 1994 12150000 1995 12150000 1996 12330000 1997 15660000 1998 17622000 1999 19845000 2000 22410000 2001 24300000 2002 26550000 2003 28260000 2004 35253000 2005 41220000 2006 45630000 2007 56880000 2008 69283000 2009 80370000 2010 118050000 2011 130740000 2012 141340000 2013 159840000 2014 156650000 2015 160620000 2016 163120000