Year | Value | 2022 | 45,582,401 | 2021 | 45,863,582 | 2020 | 46,260,267 | 2019 | 46,408,595 | 2018 | 46,517,843 | 2017 | 46,528,796 | 2016 | 46,266,440 | 2015 | 45,952,361 | 2014 | 45,890,676 | 2013 | 45,858,264 | 2012 | 45,732,523 | 2011 | 45,676,555 | 2010 | 45,601,133 | 2009 | 45,164,462 | 2008 | 44,589,941 | 2007 | 44,012,965 | 2006 | 43,441,519 | 2005 | 42,825,545 | 2004 | 42,191,169 | 2003 | 41,540,923 | 2002 | 40,866,146 | 2001 | 40,337,336 | 2000 | 39,783,369 | 1999 | 39,131,362 | 1998 | 38,733,774 | 1997 | 38,609,554 | 1996 | 38,092,653 | 1995 | 36,877,029 | 1994 | 35,546,261 | 1993 | 34,221,534 | 1992 | 32,713,753 | 1991 | 31,396,672 | 1990 | 30,863,776 | 1989 | 30,654,663 | 1988 | 30,192,749 | 1987 | 29,733,438 | 1986 | 29,409,818 | 1985 | 29,079,638 | 1984 | 28,729,640 | 1983 | 28,414,147 | 1982 | 28,147,665 | 1981 | 27,956,430 | 1980 | 27,836,452 | 1979 | 27,839,690 | 1978 | 27,852,749 | 1977 | 27,812,148 | 1976 | 27,813,306 | 1975 | 27,786,151 | 1974 | 27,611,213 | 1973 | 27,596,490 | 1972 | 27,660,277 | 1971 | 27,517,107 | 1970 | 27,359,874 | 1969 | 27,023,937 | 1968 | 25,899,326 | 1967 | 24,443,663 | 1966 | 23,225,982 | 1965 | 22,209,459 | 1964 | 21,846,102 | 1963 | 22,375,788 | 1962 | 23,271,168 | 1961 | 24,070,419 | 1960 | 24,597,605 |
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