Year | Value | 2022 | 21,131,348 | 2021 | 20,773,834 | 2020 | 20,399,958 | 2019 | 20,008,190 | 2018 | 19,616,919 | 2017 | 19,248,230 | 2016 | 18,903,624 | 2015 | 18,577,478 | 2014 | 18,260,801 | 2013 | 17,941,552 | 2012 | 17,629,246 | 2011 | 17,344,901 | 2010 | 17,097,873 | 2009 | 16,897,880 | 2008 | 16,702,293 | 2007 | 16,485,498 | 2006 | 16,226,032 | 2005 | 15,915,957 | 2004 | 15,554,626 | 2003 | 15,154,784 | 2002 | 14,735,532 | 2001 | 14,308,410 | 2000 | 13,878,381 | 1999 | 13,447,293 | 1998 | 13,022,770 | 1997 | 12,610,379 | 1996 | 12,213,220 | 1995 | 11,832,609 | 1994 | 11,459,703 | 1993 | 11,073,194 | 1992 | 10,667,596 | 1991 | 10,253,334 | 1990 | 9,832,767 | 1989 | 9,424,820 | 1988 | 9,062,463 | 1987 | 8,753,109 | 1986 | 8,486,370 | 1985 | 8,254,556 | 1984 | 8,047,018 | 1983 | 7,853,189 | 1982 | 7,666,591 | 1981 | 7,486,167 | 1980 | 7,307,204 | 1979 | 7,126,983 | 1978 | 6,958,913 | 1977 | 6,812,763 | 1976 | 6,682,952 | 1975 | 6,564,136 | 1974 | 6,452,308 | 1973 | 6,339,638 | 1972 | 6,220,103 | 1971 | 6,090,324 | 1970 | 5,950,642 | 1969 | 5,801,141 | 1968 | 5,640,886 | 1967 | 5,472,079 | 1966 | 5,298,634 | 1965 | 5,122,838 | 1964 | 4,946,000 | 1963 | 4,772,209 | 1962 | 4,609,921 | 1961 | 4,468,329 | 1960 | 4,352,967 |
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