Year | Value | 2022 | 36,965,999 | 2021 | 36,879,663 | 2020 | 36,786,680 | 2019 | 36,676,246 | 2018 | 36,561,274 | 2017 | 36,433,470 | 2016 | 36,282,093 | 2015 | 36,111,872 | 2014 | 35,929,459 | 2013 | 35,728,854 | 2012 | 35,521,331 | 2011 | 35,316,765 | 2010 | 35,124,401 | 2009 | 34,950,742 | 2008 | 34,838,171 | 2007 | 34,726,324 | 2006 | 34,560,081 | 2005 | 34,387,390 | 2004 | 34,197,293 | 2003 | 33,984,919 | 2002 | 33,748,830 | 2001 | 33,495,112 | 2000 | 33,231,598 | 1999 | 32,951,110 | 1998 | 32,646,835 | 1997 | 32,327,369 | 1996 | 32,001,720 | 1995 | 31,678,166 | 1994 | 31,352,323 | 1993 | 31,019,874 | 1992 | 30,683,820 | 1991 | 30,340,355 | 1990 | 29,977,223 | 1989 | 29,589,817 | 1988 | 29,191,626 | 1987 | 28,780,402 | 1986 | 28,347,579 | 1985 | 27,889,059 | 1984 | 27,404,818 | 1983 | 26,907,561 | 1982 | 26,406,797 | 1981 | 25,929,814 | 1980 | 25,443,029 | 1979 | 24,957,024 | 1978 | 24,476,506 | 1977 | 23,999,796 | 1976 | 23,536,176 | 1975 | 23,085,318 | 1974 | 22,637,356 | 1973 | 22,193,961 | 1972 | 21,811,976 | 1971 | 21,434,497 | 1970 | 21,055,149 | 1969 | 20,674,693 | 1968 | 20,295,394 | 1967 | 19,919,288 | 1966 | 19,552,201 | 1965 | 19,193,677 | 1964 | 18,844,742 | 1963 | 18,508,434 | 1962 | 18,180,192 | 1961 | 17,858,849 | 1960 | 17,544,676 |
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