| Year | Value | | 2022 | 3,436,874 | | 2021 | 3,494,747 | | 2020 | 3,563,080 | | 2019 | 3,639,190 | | 2018 | 3,730,407 | | 2017 | 3,844,210 | | 2016 | 3,980,993 | | 2015 | 4,135,245 | | 2014 | 4,310,212 | | 2013 | 4,499,353 | | 2012 | 4,661,743 | | 2011 | 4,766,181 | | 2010 | 4,805,464 | | 2009 | 4,764,612 | | 2008 | 4,673,276 | | 2007 | 4,593,111 | | 2006 | 4,434,347 | | 2005 | 4,272,185 | | 2004 | 4,214,524 | | 2003 | 4,143,407 | | 2002 | 4,024,112 | | 2001 | 3,991,584 | | 2000 | 3,984,777 | | 1999 | 3,904,398 | | 1998 | 3,856,724 | | 1997 | 3,820,382 | | 1996 | 3,804,109 | | 1995 | 3,829,816 | | 1994 | 3,871,207 | | 1993 | 3,921,618 | | 1992 | 4,028,439 | | 1991 | 4,191,973 | | 1990 | 4,386,968 | | 1989 | 4,687,610 | | 1988 | 5,063,855 | | 1987 | 5,387,293 | | 1986 | 5,473,419 | | 1985 | 5,299,712 | | 1984 | 5,040,027 | | 1983 | 4,775,874 | | 1982 | 4,545,269 | | 1981 | 4,501,314 | | 1980 | 4,607,535 | | 1979 | 4,588,071 | | 1978 | 4,445,941 | | 1977 | 4,320,293 | | 1976 | 4,222,759 | | 1975 | 4,163,127 | | 1974 | 4,166,233 | | 1973 | 4,198,162 | | 1972 | 4,194,261 | | 1971 | 4,152,347 | | 1970 | 4,056,851 | | 1969 | 4,000,440 | | 1968 | 3,937,085 | | 1967 | 3,866,240 | | 1966 | 3,792,682 | | 1965 | 3,730,963 | | 1964 | 3,664,709 | | 1963 | 3,586,240 | | 1962 | 3,498,265 | | 1961 | 3,393,076 | | 1960 | 3,289,700 |
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