Year | Value | 2022 | 16,441,734 | 2021 | 16,230,689 | 2020 | 16,087,342 | 2019 | 15,935,776 | 2018 | 15,765,213 | 2017 | 15,602,670 | 2016 | 15,435,425 | 2015 | 15,275,237 | 2014 | 15,126,226 | 2013 | 14,987,369 | 2012 | 14,842,886 | 2011 | 14,669,707 | 2010 | 14,477,657 | 2009 | 14,263,741 | 2008 | 14,044,865 | 2007 | 13,848,922 | 2006 | 13,671,225 | 2005 | 13,485,107 | 2004 | 13,271,929 | 2003 | 13,035,570 | 2002 | 12,775,902 | 2001 | 12,488,742 | 2000 | 12,229,998 | 1999 | 12,021,931 | 1998 | 11,819,675 | 1997 | 11,622,597 | 1996 | 11,436,659 | 1995 | 11,255,548 | 1994 | 11,069,798 | 1993 | 10,871,452 | 1992 | 10,662,777 | 1991 | 10,447,740 | 1990 | 10,269,295 | 1989 | 10,141,210 | 1988 | 10,022,989 | 1987 | 9,900,806 | 1986 | 9,780,476 | 1985 | 9,668,672 | 1984 | 9,565,992 | 1983 | 9,470,198 | 1982 | 9,376,386 | 1981 | 9,275,502 | 1980 | 9,161,288 | 1979 | 9,045,559 | 1978 | 8,939,836 | 1977 | 8,841,770 | 1976 | 8,746,238 | 1975 | 8,634,800 | 1974 | 8,515,370 | 1973 | 8,406,296 | 1972 | 8,294,650 | 1971 | 8,169,109 | 1970 | 8,039,946 | 1969 | 7,917,513 | 1968 | 7,803,319 | 1967 | 7,699,768 | 1966 | 7,590,341 | 1965 | 7,469,419 | 1964 | 7,345,397 | 1963 | 7,225,888 | 1962 | 7,107,497 | 1961 | 6,985,555 | 1960 | 6,863,492 |
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