| Year | Value | | 2022 | 5,672,219 | | 2021 | 5,573,227 | | 2020 | 5,486,987 | | 2019 | 5,427,589 | | 2018 | 5,370,837 | | 2017 | 5,318,477 | | 2016 | 5,260,823 | | 2015 | 5,181,349 | | 2014 | 5,079,391 | | 2013 | 4,964,375 | | 2012 | 4,852,446 | | 2011 | 4,770,597 | | 2010 | 4,748,761 | | 2009 | 4,806,396 | | 2008 | 4,973,427 | | 2007 | 5,223,060 | | 2006 | 5,523,514 | | 2005 | 5,862,191 | | 2004 | 6,172,897 | | 2003 | 6,382,474 | | 2002 | 6,480,396 | | 2001 | 6,481,343 | | 2000 | 6,412,163 | | 1999 | 6,353,667 | | 1998 | 6,278,859 | | 1997 | 6,175,454 | | 1996 | 6,096,629 | | 1995 | 5,993,297 | | 1994 | 5,876,938 | | 1993 | 5,745,126 | | 1992 | 5,560,733 | | 1991 | 5,324,557 | | 1990 | 4,903,489 | | 1989 | 4,244,024 | | 1988 | 3,567,304 | | 1987 | 3,094,137 | | 1986 | 2,965,918 | | 1985 | 3,270,889 | | 1984 | 3,923,882 | | 1983 | 4,755,991 | | 1982 | 5,526,985 | | 1981 | 5,898,743 | | 1980 | 5,885,848 | | 1979 | 5,609,026 | | 1978 | 5,159,480 | | 1977 | 4,794,162 | | 1976 | 4,588,944 | | 1975 | 4,608,740 | | 1974 | 4,877,877 | | 1973 | 5,283,864 | | 1972 | 5,606,124 | | 1971 | 5,811,813 | | 1970 | 5,915,455 | | 1969 | 5,866,730 | | 1968 | 5,666,830 | | 1967 | 5,348,452 | | 1966 | 4,935,102 | | 1965 | 4,480,935 | | 1964 | 4,053,937 | | 1963 | 3,772,704 | | 1962 | 3,553,688 | | 1961 | 3,399,503 | | 1960 | 3,441,972 |
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