Year | Value | 2023 | 37,760,085 | 2022 | 36,952,725 | 2021 | 36,249,209 | 2020 | 35,543,107 | 2019 | 34,835,566 | 2018 | 34,147,223 | 2017 | 33,468,602 | 2016 | 32,808,171 | 2015 | 32,153,964 | 2014 | 31,468,503 | 2013 | 30,759,725 | 2012 | 30,066,958 | 2011 | 29,391,801 | 2010 | 28,731,842 | 2009 | 28,091,906 | 2008 | 27,440,501 | 2007 | 26,739,216 | 2006 | 25,991,940 | 2005 | 25,209,971 | 2004 | 24,400,695 | 2003 | 23,375,790 | 2002 | 22,145,263 | 2001 | 20,944,165 | 2000 | 19,799,857 | 1999 | 18,706,734 | 1998 | 17,892,281 | 1997 | 17,377,102 | 1996 | 16,930,521 | 1995 | 16,535,106 | 1994 | 16,203,448 | 1993 | 15,939,227 | 1992 | 15,725,213 | 1991 | 15,523,314 | 1990 | 15,302,562 | 1989 | 15,057,708 | 1988 | 14,786,778 | 1987 | 14,495,848 | 1986 | 14,214,818 | 1985 | 13,960,344 | 1984 | 13,720,936 | 1983 | 13,488,695 | 1982 | 13,264,152 | 1981 | 13,037,077 | 1980 | 12,799,079 | 1979 | 12,551,807 | 1978 | 12,295,077 | 1977 | 12,030,887 | 1976 | 11,773,661 | 1975 | 11,529,581 | 1974 | 11,295,432 |
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