Year | Value | 2022 | 28,962,879 | 2021 | 28,111,634 | 2020 | 27,257,041 | 2019 | 26,408,138 | 2018 | 25,574,921 | 2017 | 24,742,651 | 2016 | 23,920,610 | 2015 | 23,152,869 | 2014 | 22,419,673 | 2013 | 21,692,114 | 2012 | 20,992,048 | 2011 | 20,284,324 | 2010 | 19,577,146 | 2009 | 18,882,724 | 2008 | 18,198,001 | 2007 | 17,581,681 | 2006 | 17,008,371 | 2005 | 16,429,745 | 2004 | 15,881,330 | 2003 | 15,357,259 | 2002 | 14,828,332 | 2001 | 14,325,231 | 2000 | 13,872,388 | 1999 | 13,440,588 | 1998 | 13,018,950 | 1997 | 12,637,970 | 1996 | 12,299,750 | 1995 | 11,961,465 | 1994 | 11,605,429 | 1993 | 11,256,109 | 1992 | 10,907,347 | 1991 | 10,570,670 | 1990 | 10,286,674 | 1989 | 10,022,469 | 1988 | 9,768,914 | 1987 | 9,537,279 | 1986 | 9,309,960 | 1985 | 9,083,888 | 1984 | 8,835,913 | 1983 | 8,577,095 | 1982 | 8,347,886 | 1981 | 8,167,207 | 1980 | 8,026,027 | 1979 | 7,887,696 | 1978 | 7,720,941 | 1977 | 7,533,390 | 1976 | 7,342,612 | 1975 | 7,145,466 | 1974 | 6,950,740 | 1973 | 6,775,795 | 1972 | 6,629,199 | 1971 | 6,495,255 | 1970 | 6,358,132 | 1969 | 6,221,926 | 1968 | 6,089,089 | 1967 | 5,959,367 | 1966 | 5,838,084 | 1965 | 5,726,636 | 1964 | 5,620,124 | 1963 | 5,515,092 | 1962 | 5,411,778 | 1961 | 5,310,243 | 1960 | 5,210,197 |
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