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 2627 1988 3021 1989 3619 1990 4000 1991 4500 1992 4913 1993 6877 1994 7371 1995 7368 1996 7369 1997 65378 1998 90786 1999 480974 2000 1359900 2001 2793800 2002 4494700 2003 5797530 2004 7643060 2005 13629602 2006 18001106 2007 30093673 2008 41286662 2009 55352233 2010 70661005 2011 83425145 2012 96798801 2013 99704976 2014 95316034 2015 94016152 2016 97791441 2017 102958194