Year | Value | 2022 | 37,018,439 | 2021 | 34,290,093 | 2020 | 31,805,256 | 2019 | 29,467,066 | 2018 | 27,592,813 | 2017 | 26,097,375 | 2016 | 24,987,372 | 2015 | 24,166,152 | 2014 | 23,521,753 | 2013 | 23,034,130 | 2012 | 22,678,746 | 2011 | 22,324,556 | 2010 | 22,047,240 | 2009 | 21,915,471 | 2008 | 21,807,699 | 2007 | 21,544,353 | 2006 | 21,062,858 | 2005 | 20,456,154 | 2004 | 19,802,907 | 2003 | 19,112,056 | 2002 | 18,450,524 | 2001 | 17,838,904 | 2000 | 17,262,629 | 1999 | 16,758,809 | 1998 | 16,225,495 | 1997 | 15,639,879 | 1996 | 15,152,718 | 1995 | 14,677,266 | 1994 | 14,110,783 | 1993 | 13,547,518 | 1992 | 13,090,189 | 1991 | 12,710,120 | 1990 | 12,351,763 | 1989 | 12,051,949 | 1988 | 11,815,756 | 1987 | 11,529,745 | 1986 | 11,163,931 | 1985 | 10,801,097 | 1984 | 10,465,127 | 1983 | 10,144,270 | 1982 | 9,876,773 | 1981 | 9,689,601 | 1980 | 9,527,317 | 1979 | 9,310,140 | 1978 | 9,068,603 | 1977 | 8,852,998 | 1976 | 8,617,218 | 1975 | 8,317,037 | 1974 | 7,959,049 | 1973 | 7,568,792 | 1972 | 7,205,254 | 1971 | 6,883,159 | 1970 | 6,610,106 | 1969 | 6,430,221 | 1968 | 6,304,174 | 1967 | 6,171,849 | 1966 | 6,012,962 | 1965 | 5,825,599 | 1964 | 5,666,363 | 1963 | 5,548,112 | 1962 | 5,438,286 | 1961 | 5,415,862 | 1960 | 5,532,592 |
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