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 1078 1994 1382 1995 1687 1996 2416 1997 2258 1998 6007 1999 17500 2000 41048 2001 87000 2002 108363 2003 168522 2004 212819 2005 232785 2006 320000 2007 380000 2008 657106 2009 763912 2010 521166 2011 533522 2012 569069 2013 868600 2014 927800 2015 750458 2016 806881 2017 795871