| Year | Value | | 2022 | 3,112,920 | | 2021 | 3,158,701 | | 2020 | 3,215,782 | | 2019 | 3,291,271 | | 2018 | 3,361,500 | | 2017 | 3,419,820 | | 2016 | 3,480,229 | | 2015 | 3,549,548 | | 2014 | 3,629,927 | | 2013 | 3,728,312 | | 2012 | 3,849,653 | | 2011 | 3,995,553 | | 2010 | 4,160,914 | | 2009 | 4,337,153 | | 2008 | 4,528,422 | | 2007 | 4,689,495 | | 2006 | 4,788,419 | | 2005 | 4,822,079 | | 2004 | 4,787,161 | | 2003 | 4,698,556 | | 2002 | 4,615,145 | | 2001 | 4,455,459 | | 2000 | 4,290,827 | | 1999 | 4,230,464 | | 1998 | 4,155,031 | | 1997 | 4,034,928 | | 1996 | 4,005,397 | | 1995 | 4,000,805 | | 1994 | 3,918,888 | | 1993 | 3,870,150 | | 1992 | 3,833,228 | | 1991 | 3,814,883 | | 1990 | 3,838,918 | | 1989 | 3,881,862 | | 1988 | 3,935,100 | | 1987 | 4,049,208 | | 1986 | 4,219,132 | | 1985 | 4,419,662 | | 1984 | 4,719,482 | | 1983 | 5,094,269 | | 1982 | 5,415,323 | | 1981 | 5,510,687 | | 1980 | 5,360,805 | | 1979 | 5,133,628 | | 1978 | 4,892,836 | | 1977 | 4,667,786 | | 1976 | 4,619,893 | | 1975 | 4,715,233 | | 1974 | 4,668,934 | | 1973 | 4,506,753 | | 1972 | 4,368,040 | | 1971 | 4,258,280 | | 1970 | 4,153,316 | | 1969 | 4,159,672 | | 1968 | 4,193,406 | | 1967 | 4,196,511 | | 1966 | 4,156,810 | | 1965 | 4,101,095 | | 1964 | 4,044,226 | | 1963 | 3,981,982 | | 1962 | 3,907,316 | | 1961 | 3,836,424 | | 1960 | 3,775,580 |
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