Year Total 1965 897510 1966 942760 1967 1033300 1968 1146400 1969 1221800 1970 1304800 1971 1433000 1972 1078000 1973 1552000 1974 1854000 1975 2577000 1976 2433000 1977 2667000 1978 2578000 1979 2666000 1980 2274000 1981 2532000 1982 2800000 1983 2818000 1984 2821000 1985 2804000 1986 3090000 1987 3445000 1988 3227000 1989 2592000 1990 2223000 1991 2147000 1992 2153000 1993 2084000 1994 2301000 1995 3096200 1996 3458600 1997 4443000 1998 4765600 1999 3567200 2000 4680400 2001 5099000 2002 5802600 2003 6749200 2004 8799200 2005 9018900 2006 5303200 2007 5830200 2008 11435000 2009 10688000 2010 13977000 2011 16491000 2012 15044000 2013 15826000 2014 18939000 2015 22252000 2016 21328000