Year | Value | 2022 | 41,153,249 | 2021 | 41,128,331 | 2020 | 41,151,318 | 2019 | 40,777,232 | 2018 | 40,338,400 | 2017 | 39,878,086 | 2016 | 39,373,597 | 2015 | 38,762,276 | 2014 | 38,106,725 | 2013 | 37,417,973 | 2012 | 36,726,084 | 2011 | 36,230,686 | 2010 | 35,779,668 | 2009 | 35,243,719 | 2008 | 35,007,474 | 2007 | 34,924,200 | 2006 | 34,434,330 | 2005 | 33,316,817 | 2004 | 32,017,199 | 2003 | 30,729,252 | 2002 | 29,384,462 | 2001 | 28,208,502 | 2000 | 27,781,010 | 1999 | 27,669,861 | 1998 | 27,278,999 | 1997 | 26,882,847 | 1996 | 26,653,215 | 1995 | 26,362,788 | 1994 | 25,985,128 | 1993 | 25,708,121 | 1992 | 25,487,918 | 1991 | 25,296,887 | 1990 | 25,242,626 | 1989 | 25,391,016 | 1988 | 25,484,008 | 1987 | 25,453,584 | 1986 | 25,304,436 | 1985 | 24,909,774 | 1984 | 24,299,031 | 1983 | 23,814,304 | 1982 | 23,432,214 | 1981 | 22,985,621 | 1980 | 22,689,587 | 1979 | 22,330,821 | 1978 | 21,349,794 | 1977 | 20,068,061 | 1976 | 19,021,443 | 1975 | 18,154,846 | 1974 | 17,797,126 | 1973 | 18,232,098 | 1972 | 19,056,080 | 1971 | 19,816,264 | 1970 | 20,330,704 | 1969 | 20,580,975 | 1968 | 20,599,568 | 1967 | 20,515,770 | 1966 | 20,318,966 | 1965 | 20,081,642 | 1964 | 19,813,845 | 1963 | 19,452,958 | 1962 | 19,127,689 | 1961 | 18,868,266 | 1960 | 18,567,324 |
|