Year | Value | 2023 | 36,752,428 | 2022 | 36,730,034 | 2021 | 36,686,198 | 2020 | 36,601,089 | 2019 | 36,498,738 | 2018 | 36,384,841 | 2017 | 36,238,464 | 2016 | 36,051,319 | 2015 | 35,856,230 | 2014 | 35,659,906 | 2013 | 35,441,778 | 2012 | 35,206,262 | 2011 | 34,962,671 | 2010 | 34,722,918 | 2009 | 34,475,427 | 2008 | 34,212,346 | 2007 | 33,941,308 | 2006 | 33,660,927 | 2005 | 33,371,934 | 2004 | 33,074,722 | 2003 | 32,767,624 | 2002 | 32,450,848 | 2001 | 32,126,687 | 2000 | 31,785,527 | 1999 | 31,399,187 | 1998 | 30,968,677 | 1997 | 30,527,940 | 1996 | 30,086,205 | 1995 | 29,638,596 | 1994 | 29,187,074 | 1993 | 28,730,910 | 1992 | 28,259,883 | 1991 | 27,782,050 | 1990 | 27,300,659 | 1989 | 26,835,895 | 1988 | 26,389,860 | 1987 | 25,936,943 | 1986 | 25,484,547 | 1985 | 25,026,819 | 1984 | 24,562,375 | 1983 | 24,092,109 | 1982 | 23,620,500 | 1981 | 23,153,004 | 1980 | 22,681,641 | 1979 | 22,208,064 | 1978 | 21,736,998 | 1977 | 21,259,974 | 1976 | 20,783,489 | 1975 | 20,303,995 | 1974 | 19,810,472 |
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