Year | Value | 2022 | 187,198 | 2021 | 187,948 | 2020 | 186,927 | 2019 | 184,733 | 2018 | 182,052 | 2017 | 179,527 | 2016 | 178,056 | 2015 | 177,474 | 2014 | 175,956 | 2013 | 172,156 | 2012 | 167,292 | 2011 | 163,092 | 2010 | 160,019 | 2009 | 159,248 | 2008 | 162,447 | 2007 | 168,267 | 2006 | 174,092 | 2005 | 179,378 | 2004 | 184,356 | 2003 | 188,545 | 2002 | 190,990 | 2001 | 192,356 | 2000 | 193,536 | 1999 | 194,261 | 1998 | 193,580 | 1997 | 193,232 | 1996 | 194,889 | 1995 | 197,193 | 1994 | 199,329 | 1993 | 201,996 | 1992 | 205,148 | 1991 | 206,942 | 1990 | 208,546 | 1989 | 212,349 | 1988 | 217,759 | 1987 | 222,716 | 1986 | 226,792 | 1985 | 227,748 | 1984 | 220,436 | 1983 | 206,923 | 1982 | 189,006 | 1981 | 174,117 | 1980 | 162,553 | 1979 | 154,325 | 1978 | 152,923 | 1977 | 154,174 | 1976 | 151,228 | 1975 | 147,570 | 1974 | 146,367 | 1973 | 141,648 | 1972 | 138,389 | 1971 | 138,241 | 1970 | 140,214 | 1969 | 143,340 | 1968 | 147,291 | 1967 | 150,317 | 1966 | 151,197 | 1965 | 150,718 | 1964 | 149,211 | 1963 | 147,135 | 1962 | 144,425 | 1961 | 141,437 | 1960 | 138,938 |
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