Year | Value | 2022 | 328,495 | 2021 | 322,717 | 2020 | 315,686 | 2019 | 307,667 | 2018 | 298,333 | 2017 | 289,679 | 2016 | 281,549 | 2015 | 273,188 | 2014 | 265,024 | 2013 | 257,752 | 2012 | 251,678 | 2011 | 246,163 | 2010 | 242,331 | 2009 | 240,382 | 2008 | 239,325 | 2007 | 239,195 | 2006 | 239,949 | 2005 | 239,928 | 2004 | 238,168 | 2003 | 235,433 | 2002 | 231,053 | 2001 | 225,434 | 2000 | 218,881 | 1999 | 211,628 | 1998 | 204,069 | 1997 | 197,150 | 1996 | 192,370 | 1995 | 189,850 | 1994 | 188,393 | 1993 | 187,511 | 1992 | 187,384 | 1991 | 187,146 | 1990 | 186,433 | 1989 | 185,856 | 1988 | 185,137 | 1987 | 184,171 | 1986 | 183,689 | 1985 | 183,379 | 1984 | 182,757 | 1983 | 182,385 | 1982 | 182,169 | 1981 | 182,002 | 1980 | 181,519 | 1979 | 178,470 | 1978 | 172,737 | 1977 | 166,550 | 1976 | 160,235 | 1975 | 154,624 | 1974 | 153,750 | 1973 | 157,412 | 1972 | 162,365 | 1971 | 167,414 | 1970 | 172,004 | 1969 | 174,889 | 1968 | 176,330 | 1967 | 176,837 | 1966 | 176,449 | 1965 | 175,847 | 1964 | 174,291 | 1963 | 171,607 | 1962 | 169,273 | 1961 | 168,048 | 1960 | 166,141 |
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