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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 2 |
| 1952 | 4 |
| 1953 | 4 |
| 1954 | 5 |
| 1955 | 5 |
| 1956 | 3 |
| 1957 | 7 |
| 1958 | 4 |
| 1959 | 13 |
| 1960 | 4 |
| 1961 | 6 |
| 1962 | 1 |
| 1965 | 3 |
| 1966 | 8 |
| 1967 | 9 |
| 1968 | 8 |
| 1969 | 7 |
| 1970 | 6 |
| 1971 | 8 |
| 1972 | 16 |
| 1973 | 9 |
| 1974 | 15 |
| 1975 | 10 |
| 1976 | 9 |
| 1977 | 11 |
| 1978 | 6 |
| 1979 | 10 |
| 1980 | 27 |
| 1981 | 24 |
| 1982 | 24 |
| 1983 | 19 |
| 1984 | 29 |
| 1985 | 48 |
| 1986 | 42 |
| 1987 | 51 |
| 1988 | 32 |
| 1989 | 48 |
| 1990 | 39 |
| 1991 | 43 |
| 1992 | 44 |
| 1993 | 81 |
| 1994 | 60 |
| 1995 | 75 |
| 1996 | 74 |
| 1997 | 97 |
| 1998 | 92 |
| 1999 | 112 |
| 2000 | 119 |
| 2001 | 138 |
| 2002 | 169 |
| 2003 | 163 |
| 2004 | 211 |
| 2005 | 250 |
| 2006 | 270 |
| 2007 | 260 |
| 2008 | 316 |
| 2009 | 308 |
| 2010 | 385 |
| 2011 | 400 |
| 2012 | 458 |
| 2013 | 466 |
| 2014 | 419 |
| 2015 | 506 |
| 2016 | 473 |
| 2017 | 467 |
| 2018 | 520 |
| 2019 | 507 |
| 2020 | 464 |
| 2021 | 444 |
| 2022 | 365 |
| 2023 | 37 |