| Year | Value | | 2022 | 2,611,311 | | 2021 | 2,527,324 | | 2020 | 2,524,677 | | 2019 | 2,535,242 | | 2018 | 2,561,381 | | 2017 | 2,599,580 | | 2016 | 2,648,208 | | 2015 | 2,699,319 | | 2014 | 2,763,007 | | 2013 | 2,852,823 | | 2012 | 2,961,984 | | 2011 | 3,082,949 | | 2010 | 3,222,114 | | 2009 | 3,376,400 | | 2008 | 3,520,041 | | 2007 | 3,663,221 | | 2006 | 3,793,035 | | 2005 | 3,903,240 | | 2004 | 3,996,936 | | 2003 | 4,071,404 | | 2002 | 4,130,645 | | 2001 | 4,183,848 | | 2000 | 4,245,727 | | 1999 | 4,317,429 | | 1998 | 4,365,307 | | 1997 | 4,417,934 | | 1996 | 4,479,213 | | 1995 | 4,535,453 | | 1994 | 4,568,452 | | 1993 | 4,557,045 | | 1992 | 4,504,381 | | 1991 | 4,426,635 | | 1990 | 4,333,117 | | 1989 | 4,246,825 | | 1988 | 4,192,889 | | 1987 | 4,174,572 | | 1986 | 4,127,668 | | 1985 | 4,038,963 | | 1984 | 3,955,931 | | 1983 | 3,876,489 | | 1982 | 3,800,253 | | 1981 | 3,789,883 | | 1980 | 3,848,784 | | 1979 | 3,911,084 | | 1978 | 3,976,849 | | 1977 | 4,068,225 | | 1976 | 4,212,587 | | 1975 | 4,383,156 | | 1974 | 4,527,002 | | 1973 | 4,628,197 | | 1972 | 4,683,888 | | 1971 | 4,699,444 | | 1970 | 4,687,732 | | 1969 | 4,643,631 | | 1968 | 4,574,460 | | 1967 | 4,485,790 | | 1966 | 4,354,864 | | 1965 | 4,155,366 | | 1964 | 3,925,800 | | 1963 | 3,706,881 | | 1962 | 3,503,231 | | 1961 | 3,361,705 | | 1960 | 3,327,351 |
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