Year | Value | 2022 | 23,083,216 | 2021 | 22,429,519 | 2020 | 21,781,497 | 2019 | 21,137,937 | 2018 | 20,500,956 | 2017 | 19,851,256 | 2016 | 19,192,825 | 2015 | 18,554,666 | 2014 | 17,949,339 | 2013 | 17,375,534 | 2012 | 16,844,142 | 2011 | 16,363,352 | 2010 | 15,931,485 | 2009 | 15,530,243 | 2008 | 15,141,490 | 2007 | 14,759,278 | 2006 | 14,373,344 | 2005 | 13,979,517 | 2004 | 13,584,141 | 2003 | 13,184,285 | 2002 | 12,768,167 | 2001 | 12,346,094 | 2000 | 11,940,228 | 1999 | 11,521,078 | 1998 | 11,081,382 | 1997 | 10,689,127 | 1996 | 10,353,005 | 1995 | 10,038,228 | 1994 | 9,757,239 | 1993 | 9,504,019 | 1992 | 9,237,264 | 1991 | 8,976,043 | 1990 | 8,747,612 | 1989 | 8,533,323 | 1988 | 8,342,416 | 1987 | 8,178,761 | 1986 | 8,023,555 | 1985 | 7,868,932 | 1984 | 7,713,863 | 1983 | 7,555,043 | 1982 | 7,399,218 | 1981 | 7,271,912 | 1980 | 7,177,039 | 1979 | 7,080,970 | 1978 | 6,965,285 | 1977 | 6,851,203 | 1976 | 6,745,444 | 1975 | 6,634,790 | 1974 | 6,511,127 | 1973 | 6,375,732 | 1972 | 6,238,022 | 1971 | 6,110,663 | 1970 | 5,988,510 | 1969 | 5,862,498 | 1968 | 5,736,036 | 1967 | 5,611,428 | 1966 | 5,489,829 | 1965 | 5,368,779 | 1964 | 5,247,325 | 1963 | 5,129,615 | 1962 | 5,015,441 | 1961 | 4,902,375 | 1960 | 4,793,786 |
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