| Year | Value | | 2022 | 1,673,773 | | 2021 | 1,600,268 | | 2020 | 1,541,584 | | 2019 | 1,496,915 | | 2018 | 1,466,700 | | 2017 | 1,464,517 | | 2016 | 1,490,352 | | 2015 | 1,531,072 | | 2014 | 1,587,319 | | 2013 | 1,655,535 | | 2012 | 1,717,232 | | 2011 | 1,765,679 | | 2010 | 1,807,575 | | 2009 | 1,842,057 | | 2008 | 1,871,041 | | 2007 | 1,896,738 | | 2006 | 1,919,750 | | 2005 | 1,942,215 | | 2004 | 1,959,690 | | 2003 | 1,967,788 | | 2002 | 1,967,681 | | 2001 | 1,957,835 | | 2000 | 1,937,222 | | 1999 | 1,905,349 | | 1998 | 1,863,311 | | 1997 | 1,792,780 | | 1996 | 1,696,453 | | 1995 | 1,625,530 | | 1994 | 1,587,002 | | 1993 | 1,556,408 | | 1992 | 1,530,308 | | 1991 | 1,504,151 | | 1990 | 1,471,253 | | 1989 | 1,433,148 | | 1988 | 1,394,530 | | 1987 | 1,356,101 | | 1986 | 1,316,386 | | 1985 | 1,275,083 | | 1984 | 1,234,450 | | 1983 | 1,194,268 | | 1982 | 1,153,458 | | 1981 | 1,111,342 | | 1980 | 1,068,364 | | 1979 | 1,025,680 | | 1978 | 984,699 | | 1977 | 947,070 | | 1976 | 920,279 | | 1975 | 903,355 | | 1974 | 884,363 | | 1973 | 863,395 | | 1972 | 843,020 | | 1971 | 818,993 | | 1970 | 787,895 | | 1969 | 749,092 | | 1968 | 704,936 | | 1967 | 659,560 | | 1966 | 617,324 | | 1965 | 586,764 | | 1964 | 568,084 | | 1963 | 555,876 | | 1962 | 549,575 | | 1961 | 545,703 | | 1960 | 539,146 |
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