Year Total 1960 1343000 1961 1374000 1962 1382000 1963 1818000 1964 1775000 1965 1693000 1966 2344000 1967 1948000 1968 2097000 1969 2631000 1970 2388000 1971 2736000 1972 3050000 1973 2486000 1974 2628000 1975 2241000 1976 1800000 1977 3407000 1978 3461000 1979 3989000 1980 2541000 1981 1887000 1982 2264000 1983 2326000 1984 2707000 1985 2690000 1986 2278000 1987 2355000 1988 3031000 1989 1664000 1990 2185000 1991 2346000 1992 1627000 1993 2096000 1994 2423000 1995 1987000 1996 3422000 1997 2990000 1998 2924000 1999 1966000 2000 2543000 2001 3528000 2002 1971000 2003 3530000 2004 2724000 2005 1537000 2006 2226000 2007 2342000 2008 2023000 2009 2264000 2010 3635000 2011 2631000