| Year | Value | | 2022 | 1,519,637 | | 2021 | 1,543,252 | | 2020 | 1,556,949 | | 2019 | 1,558,079 | | 2018 | 1,549,790 | | 2017 | 1,537,661 | | 2016 | 1,521,130 | | 2015 | 1,497,817 | | 2014 | 1,470,541 | | 2013 | 1,436,664 | | 2012 | 1,391,982 | | 2011 | 1,340,376 | | 2010 | 1,274,532 | | 2009 | 1,214,483 | | 2008 | 1,174,557 | | 2007 | 1,141,192 | | 2006 | 1,113,495 | | 2005 | 1,088,725 | | 2004 | 1,065,038 | | 2003 | 1,043,360 | | 2002 | 1,022,393 | | 2001 | 1,000,060 | | 2000 | 977,426 | | 1999 | 954,122 | | 1998 | 934,425 | | 1997 | 914,053 | | 1996 | 897,901 | | 1995 | 888,387 | | 1994 | 885,602 | | 1993 | 884,778 | | 1992 | 882,793 | | 1991 | 878,184 | | 1990 | 870,673 | | 1989 | 857,532 | | 1988 | 832,003 | | 1987 | 799,016 | | 1986 | 763,724 | | 1985 | 729,178 | | 1984 | 696,458 | | 1983 | 667,157 | | 1982 | 640,898 | | 1981 | 616,335 | | 1980 | 593,684 | | 1979 | 563,656 | | 1978 | 520,352 | | 1977 | 470,900 | | 1976 | 420,055 | | 1975 | 370,111 | | 1974 | 331,998 | | 1973 | 311,424 | | 1972 | 302,498 | | 1971 | 303,247 | | 1970 | 311,131 | | 1969 | 323,120 | | 1968 | 338,746 | | 1967 | 355,810 | | 1966 | 369,874 | | 1965 | 377,852 | | 1964 | 378,886 | | 1963 | 372,135 | | 1962 | 359,761 | | 1961 | 347,705 | | 1960 | 340,473 |
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