Year Number 1960 39571 1961 40083 1962 40590 1963 41091 1964 41591 1965 42093 1966 42595 1967 43096 1968 43598 1969 44129 1970 44681 1971 45214 1972 45735 1973 46247 1974 46757 1975 47277 1976 47814 1977 48371 1978 48930 1979 49496 1980 50059 1981 50614 1982 51154 1983 51692 1984 52238 1985 52789 1986 53354 1987 53928 1988 54501 1989 55070 1990 55637 1991 56200 1992 56764 1993 57337 1994 57918 1995 58498 1996 59090 1997 59691 1998 60310 1999 60944 2000 61597 2001 62286 2002 63021 2003 63802 2004 64599 2005 65401 2006 66262 2007 67224 2008 68284 2009 69465 2010 70813 2011 72345 2012 74051 2013 75795 2014 77549 2015 79443 2016 81398 2017 83346 2018 85349 2019 87456 2020 89511 2021 91255 2022 92858 2023 94835