Year | Value | 2022 | 22,492,181 | 2021 | 22,125,928 | 2020 | 21,753,419 | 2019 | 21,356,166 | 2018 | 20,954,698 | 2017 | 20,570,186 | 2016 | 20,203,340 | 2015 | 19,852,357 | 2014 | 19,515,272 | 2013 | 19,180,952 | 2012 | 18,855,964 | 2011 | 18,561,185 | 2010 | 18,303,516 | 2009 | 18,087,122 | 2008 | 17,870,691 | 2007 | 17,630,125 | 2006 | 17,343,829 | 2005 | 17,007,406 | 2004 | 16,622,390 | 2003 | 16,200,970 | 2002 | 15,763,319 | 2001 | 15,320,819 | 2000 | 14,875,331 | 1999 | 14,428,735 | 1998 | 13,987,390 | 1997 | 13,555,665 | 1996 | 13,136,599 | 1995 | 12,732,702 | 1994 | 12,335,838 | 1993 | 11,925,692 | 1992 | 11,500,323 | 1991 | 11,068,151 | 1990 | 10,639,692 | 1989 | 10,235,525 | 1988 | 9,877,951 | 1987 | 9,571,686 | 1986 | 9,307,805 | 1985 | 9,070,483 | 1984 | 8,846,145 | 1983 | 8,632,858 | 1982 | 8,424,836 | 1981 | 8,220,598 | 1980 | 8,014,866 | 1979 | 7,804,084 | 1978 | 7,601,130 | 1977 | 7,417,365 | 1976 | 7,248,220 | 1975 | 7,094,297 | 1974 | 6,958,516 | 1973 | 6,833,242 | 1972 | 6,711,082 | 1971 | 6,585,247 | 1970 | 6,458,665 | 1969 | 6,330,641 | 1968 | 6,191,668 | 1967 | 6,041,008 | 1966 | 5,883,123 | 1965 | 5,721,026 | 1964 | 5,555,020 | 1963 | 5,388,775 | 1962 | 5,231,051 | 1961 | 5,091,688 | 1960 | 4,974,715 |
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