| Year | Value | | 2022 | 1,440,266 | | 2021 | 1,453,398 | | 2020 | 1,469,534 | | 2019 | 1,483,796 | | 2018 | 1,493,837 | | 2017 | 1,497,008 | | 2016 | 1,494,793 | | 2015 | 1,489,890 | | 2014 | 1,484,747 | | 2013 | 1,478,381 | | 2012 | 1,468,064 | | 2011 | 1,452,733 | | 2010 | 1,434,090 | | 2009 | 1,413,661 | | 2008 | 1,391,236 | | 2007 | 1,366,307 | | 2006 | 1,339,672 | | 2005 | 1,311,804 | | 2004 | 1,282,184 | | 2003 | 1,256,557 | | 2002 | 1,235,411 | | 2001 | 1,213,071 | | 2000 | 1,189,058 | | 1999 | 1,163,298 | | 1998 | 1,136,066 | | 1997 | 1,108,073 | | 1996 | 1,080,256 | | 1995 | 1,052,599 | | 1994 | 1,029,641 | | 1993 | 1,011,416 | | 1992 | 993,878 | | 1991 | 976,984 | | 1990 | 959,373 | | 1989 | 941,465 | | 1988 | 923,584 | | 1987 | 903,984 | | 1986 | 882,675 | | 1985 | 857,985 | | 1984 | 829,729 | | 1983 | 800,453 | | 1982 | 769,674 | | 1981 | 738,472 | | 1980 | 708,859 | | 1979 | 680,203 | | 1978 | 646,304 | | 1977 | 606,818 | | 1976 | 568,669 | | 1975 | 532,825 | | 1974 | 500,022 | | 1973 | 477,363 | | 1972 | 465,302 | | 1971 | 457,139 | | 1970 | 451,737 | | 1969 | 450,007 | | 1968 | 451,976 | | 1967 | 456,431 | | 1966 | 461,343 | | 1965 | 465,221 | | 1964 | 467,627 | | 1963 | 468,070 | | 1962 | 466,534 | | 1961 | 464,613 | | 1960 | 464,133 |
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