| Year | Value | | 2022 | 1,471,729 | | 2021 | 1,510,914 | | 2020 | 1,500,441 | | 2019 | 1,476,226 | | 2018 | 1,445,552 | | 2017 | 1,410,247 | | 2016 | 1,365,828 | | 2015 | 1,317,608 | | 2014 | 1,272,354 | | 2013 | 1,231,349 | | 2012 | 1,196,901 | | 2011 | 1,171,893 | | 2010 | 1,157,888 | | 2009 | 1,161,476 | | 2008 | 1,174,952 | | 2007 | 1,197,214 | | 2006 | 1,226,645 | | 2005 | 1,267,258 | | 2004 | 1,320,454 | | 2003 | 1,381,761 | | 2002 | 1,448,415 | | 2001 | 1,512,520 | | 2000 | 1,565,469 | | 1999 | 1,615,745 | | 1998 | 1,629,505 | | 1997 | 1,630,835 | | 1996 | 1,623,785 | | 1995 | 1,606,951 | | 1994 | 1,576,757 | | 1993 | 1,543,529 | | 1992 | 1,504,931 | | 1991 | 1,450,321 | | 1990 | 1,357,896 | | 1989 | 1,244,894 | | 1988 | 1,130,503 | | 1987 | 1,020,327 | | 1986 | 939,796 | | 1985 | 917,410 | | 1984 | 941,109 | | 1983 | 969,932 | | 1982 | 1,001,459 | | 1981 | 1,034,225 | | 1980 | 1,058,990 | | 1979 | 1,070,977 | | 1978 | 1,079,160 | | 1977 | 1,093,078 | | 1976 | 1,107,941 | | 1975 | 1,126,249 | | 1974 | 1,147,942 | | 1973 | 1,166,347 | | 1972 | 1,172,315 | | 1971 | 1,165,547 | | 1970 | 1,163,864 | | 1969 | 1,161,197 | | 1968 | 1,152,018 | | 1967 | 1,143,371 | | 1966 | 1,119,178 | | 1965 | 1,072,945 | | 1964 | 1,017,782 | | 1963 | 936,182 | | 1962 | 834,167 | | 1961 | 756,579 | | 1960 | 705,535 |
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