Year Total 1960 0 1965 0 1970 0 1975 0 1976 0 1977 0 1978 0 1979 0 1980 0 1981 0 1982 0 1983 0 1984 0 1985 0 1986 0 1987 0 1988 0 1989 0 1990 0 1991 0 1992 0 1993 0 1994 0 1995 0 1996 0 1997 10000 1998 20000 1999 30000 2000 40000 2001 50000 2002 70000 2003 127000 2004 500000 2005 2000000 2006 3927562 2007 4500000 2008 7379115 2009 9534091 2010 10900000 2011 10000000 2012 9587000 2013 10235300 2014 8497080 2015 9747080 2016 7660068