Year | Value | 2022 | 18,406,156 | 2021 | 18,125,623 | 2020 | 17,869,822 | 2019 | 17,619,313 | 2018 | 17,363,760 | 2017 | 17,091,028 | 2016 | 16,788,028 | 2015 | 16,448,794 | 2014 | 16,072,027 | 2013 | 15,664,379 | 2012 | 15,235,269 | 2011 | 14,790,940 | 2010 | 14,340,096 | 2009 | 13,897,153 | 2008 | 13,445,045 | 2007 | 12,999,466 | 2006 | 12,567,035 | 2005 | 12,149,419 | 2004 | 11,739,800 | 2003 | 11,319,200 | 2002 | 10,885,889 | 2001 | 10,449,787 | 2000 | 10,011,555 | 1999 | 9,587,427 | 1998 | 9,205,864 | 1997 | 8,871,497 | 1996 | 8,576,735 | 1995 | 8,319,858 | 1994 | 8,091,725 | 1993 | 7,881,500 | 1992 | 7,681,856 | 1991 | 7,489,890 | 1990 | 7,304,651 | 1989 | 7,131,722 | 1988 | 6,976,378 | 1987 | 6,835,748 | 1986 | 6,705,724 | 1985 | 6,583,243 | 1984 | 6,464,567 | 1983 | 6,343,759 | 1982 | 6,216,115 | 1981 | 6,078,317 | 1980 | 5,927,782 | 1979 | 5,765,307 | 1978 | 5,592,815 | 1977 | 5,412,295 | 1976 | 5,230,965 | 1975 | 5,051,850 | 1974 | 4,872,751 | 1973 | 4,695,624 | 1972 | 4,528,982 | 1971 | 4,382,195 | 1970 | 4,261,302 | 1969 | 4,164,208 | 1968 | 4,085,168 | 1967 | 4,016,697 | 1966 | 3,947,261 | 1965 | 3,868,070 | 1964 | 3,776,599 | 1963 | 3,673,024 | 1962 | 3,560,369 | 1961 | 3,445,429 | 1960 | 3,334,199 |
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