Year | Value | 2022 | 189,208 | 2021 | 182,806 | 2020 | 177,611 | 2019 | 172,455 | 2018 | 167,463 | 2017 | 163,511 | 2016 | 160,618 | 2015 | 159,061 | 2014 | 159,675 | 2013 | 162,132 | 2012 | 165,143 | 2011 | 168,620 | 2010 | 173,326 | 2009 | 178,048 | 2008 | 181,754 | 2007 | 185,861 | 2006 | 189,935 | 2005 | 191,041 | 2004 | 190,236 | 2003 | 190,062 | 2002 | 191,086 | 2001 | 194,578 | 2000 | 199,987 | 1999 | 205,031 | 1998 | 208,604 | 1997 | 208,547 | 1996 | 203,848 | 1995 | 197,419 | 1994 | 191,684 | 1993 | 186,742 | 1992 | 183,291 | 1991 | 181,664 | 1990 | 180,877 | 1989 | 180,776 | 1988 | 181,500 | 1987 | 182,121 | 1986 | 181,742 | 1985 | 181,631 | 1984 | 182,598 | 1983 | 184,357 | 1982 | 188,392 | 1981 | 195,045 | 1980 | 201,349 | 1979 | 205,517 | 1978 | 206,479 | 1977 | 202,725 | 1976 | 193,918 | 1975 | 182,886 | 1974 | 172,363 | 1973 | 163,254 | 1972 | 156,241 | 1971 | 151,831 | 1970 | 148,815 | 1969 | 146,032 | 1968 | 143,575 | 1967 | 141,395 | 1966 | 140,027 | 1965 | 139,546 | 1964 | 139,499 | 1963 | 140,186 | 1962 | 141,358 | 1961 | 142,590 | 1960 | 144,527 |
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