Year Total 1965 47000 1966 47000 1967 71000 1968 92000 1969 107000 1970 93000 1971 89000 1972 106000 1973 138000 1974 188000 1975 224000 1976 308000 1977 410000 1978 398000 1979 432000 1980 693000 1981 756000 1982 1049000 1983 1149000 1984 1298000 1985 1825000 1986 2152000 1987 2292000 1988 1501000 1989 1657000 1990 1715000 1991 1474000 1992 1535000 1993 1559000 1994 1664000 1995 1745000 1996 1851000 1997 1960000 1998 2011000 1999 1970000 2000 1697000 2001 2069000 2002 2673000 2003 2794000 2004 2975000 2005 3564400 2006 4634500 2007 5246400 2008 6260000 2009 6031800 2010 6478200 2011 7984100 2012 8203800 2013 9318400 2014 9729000 2015 10692000 2016 11704000