| Year | Value | | 2022 | 1,558,481 | | 2021 | 1,585,625 | | 2020 | 1,578,048 | | 2019 | 1,529,099 | | 2018 | 1,483,877 | | 2017 | 1,420,943 | | 2016 | 1,360,477 | | 2015 | 1,353,996 | | 2014 | 1,394,697 | | 2013 | 1,413,117 | | 2012 | 1,416,617 | | 2011 | 1,413,780 | | 2010 | 1,391,604 | | 2009 | 1,355,578 | | 2008 | 1,318,301 | | 2007 | 1,289,122 | | 2006 | 1,276,088 | | 2005 | 1,272,738 | | 2004 | 1,263,461 | | 2003 | 1,248,937 | | 2002 | 1,237,571 | | 2001 | 1,223,201 | | 2000 | 1,198,427 | | 1999 | 1,178,079 | | 1998 | 1,168,948 | | 1997 | 1,157,130 | | 1996 | 1,143,009 | | 1995 | 1,131,124 | | 1994 | 1,085,866 | | 1993 | 989,886 | | 1992 | 882,712 | | 1991 | 793,640 | | 1990 | 735,169 | | 1989 | 740,069 | | 1988 | 811,887 | | 1987 | 902,976 | | 1986 | 970,354 | | 1985 | 997,457 | | 1984 | 995,828 | | 1983 | 981,539 | | 1982 | 955,203 | | 1981 | 926,858 | | 1980 | 908,064 | | 1979 | 885,465 | | 1978 | 857,798 | | 1977 | 835,785 | | 1976 | 820,151 | | 1975 | 807,945 | | 1974 | 792,170 | | 1973 | 771,324 | | 1972 | 747,484 | | 1971 | 714,576 | | 1970 | 674,580 | | 1969 | 644,547 | | 1968 | 629,765 | | 1967 | 619,283 | | 1966 | 611,802 | | 1965 | 608,537 | | 1964 | 608,401 | | 1963 | 608,188 | | 1962 | 605,997 | | 1961 | 600,329 | | 1960 | 594,263 |
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