| Year | Value | | 2022 | 1,510,700 | | 2021 | 1,562,177 | | 2020 | 1,571,230 | | 2019 | 1,568,545 | | 2018 | 1,551,364 | | 2017 | 1,529,573 | | 2016 | 1,518,516 | | 2015 | 1,507,023 | | 2014 | 1,483,557 | | 2013 | 1,454,554 | | 2012 | 1,420,342 | | 2011 | 1,376,354 | | 2010 | 1,328,072 | | 2009 | 1,287,405 | | 2008 | 1,246,507 | | 2007 | 1,212,596 | | 2006 | 1,188,520 | | 2005 | 1,175,432 | | 2004 | 1,174,953 | | 2003 | 1,188,070 | | 2002 | 1,210,226 | | 2001 | 1,239,744 | | 2000 | 1,280,459 | | 1999 | 1,348,210 | | 1998 | 1,411,378 | | 1997 | 1,479,311 | | 1996 | 1,545,111 | | 1995 | 1,599,248 | | 1994 | 1,633,738 | | 1993 | 1,648,195 | | 1992 | 1,649,638 | | 1991 | 1,642,013 | | 1990 | 1,624,703 | | 1989 | 1,593,859 | | 1988 | 1,560,035 | | 1987 | 1,520,894 | | 1986 | 1,465,169 | | 1985 | 1,369,698 | | 1984 | 1,252,894 | | 1983 | 1,140,375 | | 1982 | 1,032,171 | | 1981 | 950,573 | | 1980 | 928,026 | | 1979 | 952,627 | | 1978 | 983,257 | | 1977 | 1,016,231 | | 1976 | 1,049,162 | | 1975 | 1,073,660 | | 1974 | 1,085,770 | | 1973 | 1,093,236 | | 1972 | 1,105,564 | | 1971 | 1,121,026 | | 1970 | 1,145,201 | | 1969 | 1,171,754 | | 1968 | 1,190,380 | | 1967 | 1,194,291 | | 1966 | 1,185,725 | | 1965 | 1,182,090 | | 1964 | 1,175,327 | | 1963 | 1,162,270 | | 1962 | 1,153,519 | | 1961 | 1,130,656 | | 1960 | 1,084,010 |
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