Year | Value | 2022 | 284,306 | 2021 | 282,943 | 2020 | 282,133 | 2019 | 281,955 | 2018 | 286,668 | 2017 | 298,064 | 2016 | 312,349 | 2015 | 326,964 | 2014 | 340,459 | 2013 | 350,048 | 2012 | 354,555 | 2011 | 355,292 | 2010 | 353,512 | 2009 | 349,639 | 2008 | 342,865 | 2007 | 333,076 | 2006 | 322,142 | 2005 | 311,410 | 2004 | 302,691 | 2003 | 296,768 | 2002 | 290,560 | 2001 | 280,225 | 2000 | 263,179 | 1999 | 239,515 | 1998 | 214,435 | 1997 | 196,236 | 1996 | 191,280 | 1995 | 201,234 | 1994 | 222,296 | 1993 | 248,707 | 1992 | 273,736 | 1991 | 291,597 | 1990 | 300,168 | 1989 | 299,877 | 1988 | 294,437 | 1987 | 288,917 | 1986 | 285,983 | 1985 | 289,171 | 1984 | 298,168 | 1983 | 307,902 | 1982 | 312,417 | 1981 | 308,533 | 1980 | 296,311 | 1979 | 278,506 | 1978 | 257,912 | 1977 | 236,631 | 1976 | 216,223 | 1975 | 197,086 | 1974 | 178,733 | 1973 | 160,762 | 1972 | 144,287 | 1971 | 131,343 | 1970 | 123,404 | 1969 | 120,849 | 1968 | 123,251 | 1967 | 129,147 | 1966 | 136,237 | 1965 | 142,807 | 1964 | 147,814 | 1963 | 150,912 | 1962 | 152,572 | 1961 | 153,663 | 1960 | 154,673 |
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