| Year | Value | | 2022 | 3,603,837 | | 2021 | 3,607,580 | | 2020 | 3,602,942 | | 2019 | 3,607,176 | | 2018 | 3,592,701 | | 2017 | 3,564,400 | | 2016 | 3,554,956 | | 2015 | 3,543,216 | | 2014 | 3,528,997 | | 2013 | 3,512,838 | | 2012 | 3,494,642 | | 2011 | 3,477,598 | | 2010 | 3,460,727 | | 2009 | 3,442,188 | | 2008 | 3,423,138 | | 2007 | 3,404,410 | | 2006 | 3,384,893 | | 2005 | 3,364,673 | | 2004 | 3,344,037 | | 2003 | 3,323,306 | | 2002 | 3,302,207 | | 2001 | 3,282,145 | | 2000 | 3,264,919 | | 1999 | 3,250,731 | | 1998 | 3,234,950 | | 1997 | 3,217,946 | | 1996 | 3,200,325 | | 1995 | 3,181,485 | | 1994 | 3,161,901 | | 1993 | 3,143,002 | | 1992 | 3,124,227 | | 1991 | 3,106,707 | | 1990 | 3,096,118 | | 1989 | 3,090,079 | | 1988 | 3,083,204 | | 1987 | 3,075,503 | | 1986 | 3,065,295 | | 1985 | 3,051,054 | | 1984 | 3,034,226 | | 1983 | 3,015,357 | | 1982 | 2,994,209 | | 1981 | 2,979,336 | | 1980 | 2,964,307 | | 1979 | 2,967,309 | | 1978 | 2,972,127 | | 1977 | 2,976,335 | | 1976 | 2,980,064 | | 1975 | 2,982,941 | | 1974 | 2,984,440 | | 1973 | 2,984,611 | | 1972 | 2,983,450 | | 1971 | 2,973,270 | | 1970 | 2,955,047 | | 1969 | 2,939,488 | | 1968 | 2,923,834 | | 1967 | 2,906,855 | | 1966 | 2,887,802 | | 1965 | 2,866,705 | | 1964 | 2,843,626 | | 1963 | 2,819,456 | | 1962 | 2,794,505 | | 1961 | 2,768,518 | | 1960 | 2,739,163 |
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