Year | Value | 2022 | 48,470,489 | 2021 | 47,138,192 | 2020 | 45,811,998 | 2019 | 44,523,904 | 2018 | 43,271,023 | 2017 | 42,006,392 | 2016 | 40,750,834 | 2015 | 39,547,410 | 2014 | 38,374,076 | 2013 | 37,250,481 | 2012 | 36,205,854 | 2011 | 35,182,792 | 2010 | 34,191,846 | 2009 | 33,290,770 | 2008 | 32,430,207 | 2007 | 31,594,324 | 2006 | 30,784,196 | 2005 | 29,956,345 | 2004 | 29,130,366 | 2003 | 28,292,475 | 2002 | 27,420,112 | 2001 | 26,587,264 | 2000 | 25,849,743 | 1999 | 25,136,052 | 1998 | 24,413,788 | 1997 | 23,696,353 | 1996 | 22,988,420 | 1995 | 22,262,268 | 1994 | 21,507,224 | 1993 | 20,739,666 | 1992 | 19,996,891 | 1991 | 19,366,131 | 1990 | 18,838,908 | 1989 | 18,320,097 | 1988 | 17,784,619 | 1987 | 17,250,948 | 1986 | 16,729,922 | 1985 | 16,225,041 | 1984 | 15,730,363 | 1983 | 15,257,696 | 1982 | 14,816,222 | 1981 | 14,433,929 | 1980 | 14,109,289 | 1979 | 13,763,382 | 1978 | 13,357,974 | 1977 | 12,951,988 | 1976 | 12,556,477 | 1975 | 12,164,686 | 1974 | 11,794,249 | 1973 | 11,443,767 | 1972 | 11,126,362 | 1971 | 10,825,147 | 1970 | 10,524,699 | 1969 | 10,213,496 | 1968 | 9,898,428 | 1967 | 9,619,636 | 1966 | 9,377,958 | 1965 | 9,151,465 | 1964 | 8,951,987 | 1963 | 8,770,308 | 1962 | 8,563,654 | 1961 | 8,336,516 | 1960 | 8,114,343 |
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