Year | Value | 2023 | 33,264,194 | 2022 | 33,795,231 | 2021 | 34,312,204 | 2020 | 34,796,269 | 2019 | 35,266,201 | 2018 | 35,724,441 | 2017 | 36,149,375 | 2016 | 36,529,665 | 2015 | 36,897,068 | 2014 | 37,254,698 | 2013 | 37,581,560 | 2012 | 37,880,863 | 2011 | 38,162,366 | 2010 | 38,503,245 | 2009 | 39,140,329 | 2008 | 39,732,060 | 2007 | 40,294,988 | 2006 | 40,823,965 | 2005 | 41,319,643 | 2004 | 41,778,696 | 2003 | 42,202,580 | 2002 | 42,586,797 | 2001 | 42,933,968 | 2000 | 43,232,182 | 1999 | 43,005,652 | 1998 | 42,576,736 | 1997 | 42,129,502 | 1996 | 41,675,004 | 1995 | 41,205,651 | 1994 | 40,721,424 | 1993 | 40,223,628 | 1992 | 39,704,157 | 1991 | 39,172,648 | 1990 | 38,632,123 | 1989 | 38,142,831 | 1988 | 37,662,971 | 1987 | 37,166,330 | 1986 | 36,663,288 | 1985 | 36,147,185 | 1984 | 35,616,141 | 1983 | 35,073,487 | 1982 | 34,524,758 | 1981 | 33,977,552 | 1980 | 33,419,925 | 1979 | 32,983,423 | 1978 | 32,576,371 | 1977 | 32,141,549 | 1976 | 31,688,421 | 1975 | 31,213,479 | 1974 | 30,698,203 |
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