Year | Value | 2022 | 14,220,891 | 2021 | 14,135,261 | 2020 | 13,882,016 | 2019 | 13,644,779 | 2018 | 13,426,358 | 2017 | 13,248,835 | 2016 | 13,083,460 | 2015 | 12,914,839 | 2014 | 12,732,175 | 2013 | 12,579,974 | 2012 | 12,421,258 | 2011 | 12,237,165 | 2010 | 12,117,757 | 2009 | 12,115,909 | 2008 | 12,234,403 | 2007 | 12,466,729 | 2006 | 12,831,226 | 2005 | 13,225,209 | 2004 | 13,538,772 | 2003 | 13,667,587 | 2002 | 13,660,148 | 2001 | 13,534,192 | 2000 | 13,282,915 | 1999 | 13,047,986 | 1998 | 12,877,706 | 1997 | 12,655,854 | 1996 | 12,422,869 | 1995 | 12,235,399 | 1994 | 12,079,509 | 1993 | 11,830,956 | 1992 | 11,480,981 | 1991 | 11,039,965 | 1990 | 10,276,163 | 1989 | 9,216,607 | 1988 | 8,179,561 | 1987 | 7,438,172 | 1986 | 7,201,282 | 1985 | 7,592,726 | 1984 | 8,470,629 | 1983 | 9,590,451 | 1982 | 10,680,361 | 1981 | 11,274,364 | 1980 | 11,337,614 | 1979 | 11,028,546 | 1978 | 10,410,934 | 1977 | 9,783,678 | 1976 | 9,375,023 | 1975 | 9,313,076 | 1974 | 9,604,789 | 1973 | 10,084,733 | 1972 | 10,462,782 | 1971 | 10,578,401 | 1970 | 10,345,819 | 1969 | 9,796,044 | 1968 | 9,030,634 | 1967 | 8,109,126 | 1966 | 7,204,888 | 1965 | 6,454,874 | 1964 | 5,845,011 | 1963 | 5,419,637 | 1962 | 5,097,853 | 1961 | 4,833,431 | 1960 | 4,729,325 |
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