Year Total 1965 20000 1966 21000 1967 22000 1968 23000 1969 24000 1970 24000 1971 142680 1972 150320 1973 272410 1974 204020 1975 251900 1976 165230 1977 256040 1978 78880 1979 164430 1980 156620 1981 154730 1982 88313 1983 123580 1984 135200 1985 179010 1986 199060 1987 261490 1988 190080 1989 521920 1990 462790 1991 0 1992 3650 1993 28470 1994 55481 1995 5110 1996 16060 1997 34310 1998 35770 1999 36500 2000 132130 2001 48911 2002 18250 2003 43071 2004 0 2005 37230 2006 247470 2007 138700 2008 140890 2009 237250 2010 199290 2011 205130 2012 210970 2013 210240 2014 197100 2015 201000 2016 67694