Year | Value | 2023 | 42,606,561 | 2022 | 42,453,487 | 2021 | 42,065,122 | 2020 | 41,714,021 | 2019 | 41,335,957 | 2018 | 40,765,876 | 2017 | 40,229,820 | 2016 | 39,724,020 | 2015 | 39,205,598 | 2014 | 38,697,460 | 2013 | 38,190,305 | 2012 | 37,715,913 | 2011 | 37,253,203 | 2010 | 36,708,205 | 2009 | 36,134,689 | 2008 | 35,619,832 | 2007 | 35,168,809 | 2006 | 35,125,774 | 2005 | 34,780,073 | 2004 | 34,423,143 | 2003 | 34,053,750 | 2002 | 33,672,826 | 2001 | 33,280,970 | 2000 | 32,880,645 | 1999 | 32,472,315 | 1998 | 32,052,928 | 1997 | 31,622,988 | 1996 | 31,184,009 | 1995 | 30,733,422 | 1994 | 30,247,842 | 1993 | 29,737,151 | 1992 | 29,239,537 | 1991 | 28,756,234 | 1990 | 28,265,597 | 1989 | 27,752,437 | 1988 | 27,225,225 | 1987 | 26,698,876 | 1986 | 26,172,937 | 1985 | 25,635,234 | 1984 | 25,086,876 | 1983 | 24,531,877 | 1982 | 23,977,638 | 1981 | 23,486,618 | 1980 | 23,041,460 | 1979 | 22,621,953 | 1978 | 22,237,025 | 1977 | 21,848,903 | 1976 | 21,460,803 | 1975 | 21,039,190 |
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