Year | Value | 2022 | 33,094,839 | 2021 | 33,112,733 | 2020 | 33,133,126 | 2019 | 33,000,535 | 2018 | 32,798,279 | 2017 | 32,581,496 | 2016 | 32,340,918 | 2015 | 32,074,811 | 2014 | 31,799,385 | 2013 | 31,543,950 | 2012 | 31,309,446 | 2011 | 31,069,406 | 2010 | 30,805,860 | 2009 | 30,543,717 | 2008 | 30,290,652 | 2007 | 30,029,168 | 2006 | 29,773,916 | 2005 | 29,533,818 | 2004 | 29,309,526 | 2003 | 29,120,962 | 2002 | 28,964,154 | 2001 | 28,822,894 | 2000 | 28,695,232 | 1999 | 28,576,570 | 1998 | 28,466,582 | 1997 | 28,370,938 | 1996 | 28,287,113 | 1995 | 28,207,182 | 1994 | 28,126,906 | 1993 | 28,050,576 | 1992 | 27,980,155 | 1991 | 27,903,023 | 1990 | 27,816,770 | 1989 | 27,734,053 | 1988 | 27,662,925 | 1987 | 27,604,622 | 1986 | 27,550,103 | 1985 | 27,490,745 | 1984 | 27,433,466 | 1983 | 27,395,640 | 1982 | 27,390,617 | 1981 | 27,403,494 | 1980 | 27,396,170 | 1979 | 27,363,607 | 1978 | 27,337,338 | 1977 | 27,332,841 | 1976 | 27,336,512 | 1975 | 27,336,711 | 1974 | 27,331,069 | 1973 | 27,304,012 | 1972 | 27,240,589 | 1971 | 27,137,139 | 1970 | 27,012,750 | 1969 | 26,895,736 | 1968 | 26,774,403 | 1967 | 26,633,598 | 1966 | 26,479,971 | 1965 | 26,323,655 | 1964 | 26,143,238 | 1963 | 25,960,708 | 1962 | 25,753,068 | 1961 | 25,519,603 | 1960 | 25,309,533 |
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