Year | Value | 2022 | 159,376 | 2021 | 169,657 | 2020 | 175,288 | 2019 | 175,941 | 2018 | 171,346 | 2017 | 168,064 | 2016 | 169,726 | 2015 | 174,259 | 2014 | 181,947 | 2013 | 192,137 | 2012 | 198,952 | 2011 | 201,041 | 2010 | 203,906 | 2009 | 206,718 | 2008 | 211,110 | 2007 | 217,189 | 2006 | 222,981 | 2005 | 227,839 | 2004 | 233,379 | 2003 | 237,774 | 2002 | 240,139 | 2001 | 241,508 | 2000 | 243,306 | 1999 | 245,111 | 1998 | 247,387 | 1997 | 251,728 | 1996 | 257,635 | 1995 | 262,803 | 1994 | 269,599 | 1993 | 269,753 | 1992 | 267,265 | 1991 | 261,872 | 1990 | 257,128 | 1989 | 255,336 | 1988 | 254,867 | 1987 | 254,698 | 1986 | 256,019 | 1985 | 258,494 | 1984 | 259,877 | 1983 | 260,025 | 1982 | 260,437 | 1981 | 261,081 | 1980 | 261,651 | 1979 | 261,947 | 1978 | 262,141 | 1977 | 262,359 | 1976 | 264,147 | 1975 | 268,811 | 1974 | 278,495 | 1973 | 290,615 | 1972 | 303,509 | 1971 | 311,538 | 1970 | 316,211 | 1969 | 322,679 | 1968 | 324,763 | 1967 | 321,191 | 1966 | 317,019 | 1965 | 309,897 | 1964 | 297,132 | 1963 | 285,437 | 1962 | 278,862 | 1961 | 278,744 | 1960 | 280,447 |
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