| Year | Value | | 2022 | 1,472,233 | | 2021 | 1,463,265 | | 2020 | 1,477,469 | | 2019 | 1,494,188 | | 2018 | 1,487,340 | | 2017 | 1,456,834 | | 2016 | 1,409,661 | | 2015 | 1,362,142 | | 2014 | 1,311,134 | | 2013 | 1,261,673 | | 2012 | 1,224,939 | | 2011 | 1,212,077 | | 2010 | 1,213,645 | | 2009 | 1,179,453 | | 2008 | 1,110,343 | | 2007 | 1,040,532 | | 2006 | 970,981 | | 2005 | 901,921 | | 2004 | 833,451 | | 2003 | 778,256 | | 2002 | 748,324 | | 2001 | 730,257 | | 2000 | 711,442 | | 1999 | 692,133 | | 1998 | 672,484 | | 1997 | 652,643 | | 1996 | 632,756 | | 1995 | 612,934 | | 1994 | 593,254 | | 1993 | 573,755 | | 1992 | 554,470 | | 1991 | 535,415 | | 1990 | 517,418 | | 1989 | 500,349 | | 1988 | 483,337 | | 1987 | 466,565 | | 1986 | 450,196 | | 1985 | 434,375 | | 1984 | 419,217 | | 1983 | 404,772 | | 1982 | 391,017 | | 1981 | 377,430 | | 1980 | 362,595 | | 1979 | 346,697 | | 1978 | 330,912 | | 1977 | 315,337 | | 1976 | 300,044 | | 1975 | 285,116 | | 1974 | 270,627 | | 1973 | 256,632 | | 1972 | 243,143 | | 1971 | 230,992 | | 1970 | 222,555 | | 1969 | 216,696 | | 1968 | 210,801 | | 1967 | 204,916 | | 1966 | 199,019 | | 1965 | 193,012 | | 1964 | 186,587 | | 1963 | 179,891 | | 1962 | 173,359 | | 1961 | 166,970 | | 1960 | 160,691 |
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