Year | Value | 2022 | 38,845,702 | 2021 | 38,433,346 | 2020 | 38,276,186 | 2019 | 37,974,181 | 2018 | 37,588,424 | 2017 | 37,311,863 | 2016 | 37,112,875 | 2015 | 36,971,015 | 2014 | 36,890,017 | 2013 | 36,891,840 | 2012 | 36,904,876 | 2011 | 36,773,882 | 2010 | 36,535,850 | 2009 | 36,260,460 | 2008 | 35,833,174 | 2007 | 35,159,317 | 2006 | 34,408,810 | 2005 | 33,727,737 | 2004 | 33,059,302 | 2003 | 32,390,830 | 2002 | 31,708,814 | 2001 | 31,186,430 | 2000 | 30,937,864 | 1999 | 30,767,125 | 1998 | 30,610,090 | 1997 | 30,451,227 | 1996 | 30,291,556 | 1995 | 30,133,075 | 1994 | 29,967,941 | 1993 | 29,793,326 | 1992 | 29,607,126 | 1991 | 29,430,524 | 1990 | 29,286,916 | 1989 | 29,169,746 | 1988 | 29,036,437 | 1987 | 28,887,112 | 1986 | 28,723,937 | 1985 | 28,549,379 | 1984 | 28,357,570 | 1983 | 28,151,118 | 1982 | 27,925,417 | 1981 | 27,669,147 | 1980 | 27,289,444 | 1979 | 26,838,008 | 1978 | 26,368,356 | 1977 | 25,880,544 | 1976 | 25,379,947 | 1975 | 24,876,771 | 1974 | 24,372,582 | 1973 | 23,870,859 | 1972 | 23,372,204 | 1971 | 22,878,387 | 1970 | 22,330,440 | 1969 | 21,772,801 | 1968 | 21,248,036 | 1967 | 20,660,198 | 1966 | 20,096,611 | 1965 | 19,580,951 | 1964 | 19,059,712 | 1963 | 18,560,792 | 1962 | 18,089,104 | 1961 | 17,614,512 | 1960 | 17,227,480 |
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