Year | Value | 2022 | 34,635,687 | 2021 | 35,302,262 | 2020 | 35,763,192 | 2019 | 36,014,549 | 2018 | 36,214,905 | 2017 | 36,261,751 | 2016 | 36,174,285 | 2015 | 36,024,084 | 2014 | 35,898,254 | 2013 | 35,818,022 | 2012 | 35,803,944 | 2011 | 35,854,066 | 2010 | 36,013,627 | 2009 | 36,138,280 | 2008 | 36,160,772 | 2007 | 36,032,076 | 2006 | 35,866,318 | 2005 | 35,739,339 | 2004 | 35,750,980 | 2003 | 35,935,196 | 2002 | 36,303,111 | 2001 | 36,882,406 | 2000 | 37,535,370 | 1999 | 38,016,875 | 1998 | 38,333,959 | 1997 | 38,540,105 | 1996 | 38,503,598 | 1995 | 38,444,386 | 1994 | 38,643,817 | 1993 | 38,917,977 | 1992 | 39,098,022 | 1991 | 39,267,521 | 1990 | 39,356,239 | 1989 | 39,233,865 | 1988 | 38,983,025 | 1987 | 38,681,567 | 1986 | 38,313,749 | 1985 | 37,898,680 | 1984 | 37,486,309 | 1983 | 37,010,489 | 1982 | 36,495,772 | 1981 | 36,230,136 | 1980 | 35,895,954 | 1979 | 35,486,897 | 1978 | 35,397,855 | 1977 | 35,476,825 | 1976 | 35,107,647 | 1975 | 34,102,665 | 1974 | 32,919,863 | 1973 | 31,746,354 | 1972 | 30,487,291 | 1971 | 29,404,064 | 1970 | 29,072,993 | 1969 | 29,149,079 | 1968 | 28,966,887 | 1967 | 28,800,222 | 1966 | 28,731,101 | 1965 | 28,495,243 | 1964 | 28,076,580 | 1963 | 27,677,434 | 1962 | 27,320,960 | 1961 | 27,049,995 | 1960 | 27,059,850 |
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