Year | Value | 2022 | 162,914 | 2021 | 167,000 | 2020 | 168,426 | 2019 | 169,709 | 2018 | 170,758 | 2017 | 171,871 | 2016 | 172,853 | 2015 | 173,354 | 2014 | 172,937 | 2013 | 171,831 | 2012 | 169,703 | 2011 | 166,624 | 2010 | 164,988 | 2009 | 164,987 | 2008 | 168,628 | 2007 | 175,479 | 2006 | 183,499 | 2005 | 189,177 | 2004 | 189,553 | 2003 | 184,380 | 2002 | 180,724 | 2001 | 181,959 | 2000 | 186,283 | 1999 | 194,557 | 1998 | 205,588 | 1997 | 213,138 | 1996 | 215,961 | 1995 | 218,763 | 1994 | 225,225 | 1993 | 229,537 | 1992 | 235,225 | 1991 | 238,726 | 1990 | 241,688 | 1989 | 246,731 | 1988 | 250,604 | 1987 | 252,360 | 1986 | 253,230 | 1985 | 254,390 | 1984 | 256,368 | 1983 | 258,642 | 1982 | 262,489 | 1981 | 267,745 | 1980 | 272,083 | 1979 | 274,338 | 1978 | 274,963 | 1977 | 274,034 | 1976 | 270,594 | 1975 | 265,904 | 1974 | 264,148 | 1973 | 263,866 | 1972 | 264,053 | 1971 | 266,778 | 1970 | 271,491 | 1969 | 274,545 | 1968 | 276,091 | 1967 | 277,673 | 1966 | 279,388 | 1965 | 281,992 | 1964 | 284,547 | 1963 | 284,118 | 1962 | 280,303 | 1961 | 273,121 | 1960 | 269,624 |
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