Year Total 1965 2278000 1966 1850000 1967 1723000 1968 1627000 1969 1591000 1970 1502000 1971 1353000 1972 1210000 1973 1105000 1974 1104000 1975 1235000 1976 1293000 1977 1246000 1978 1489000 1979 1717000 1980 1707000 1981 1487000 1982 1763000 1983 2241000 1984 2273000 1985 2384000 1986 2558000 1987 3935000 1988 4837000 1989 4604000 1990 4668000 1991 4332000 1992 4501000 1993 4640000 1994 4895000 1995 5236000 1996 5452000 1997 5948000 1998 5622000 1999 5015000 2000 4586000 2001 4128000 2002 5531000 2003 5570000 2004 5469000 2005 6111000 2006 5769000 2007 5860500 2008 5235900 2009 4572300 2010 5106200 2011 5307000 2012 5397100 2013 5559500 2014 5820900 2015 5518700 2016 3798100