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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 1 |
| 1955 | 1 |
| 1961 | 6 |
| 1962 | 5 |
| 1963 | 3 |
| 1964 | 6 |
| 1965 | 4 |
| 1966 | 7 |
| 1967 | 4 |
| 1968 | 6 |
| 1969 | 15 |
| 1970 | 11 |
| 1971 | 7 |
| 1972 | 6 |
| 1973 | 8 |
| 1974 | 13 |
| 1975 | 7 |
| 1976 | 4 |
| 1977 | 7 |
| 1978 | 10 |
| 1979 | 11 |
| 1980 | 27 |
| 1981 | 24 |
| 1982 | 13 |
| 1983 | 14 |
| 1984 | 29 |
| 1985 | 44 |
| 1986 | 48 |
| 1987 | 55 |
| 1988 | 63 |
| 1989 | 44 |
| 1990 | 31 |
| 1991 | 36 |
| 1992 | 47 |
| 1993 | 60 |
| 1994 | 49 |
| 1995 | 74 |
| 1996 | 60 |
| 1997 | 57 |
| 1998 | 60 |
| 1999 | 74 |
| 2000 | 56 |
| 2001 | 64 |
| 2002 | 76 |
| 2003 | 69 |
| 2004 | 94 |
| 2005 | 83 |
| 2006 | 93 |
| 2007 | 104 |
| 2008 | 119 |
| 2009 | 140 |
| 2010 | 125 |
| 2011 | 178 |
| 2012 | 168 |
| 2013 | 133 |
| 2014 | 137 |
| 2015 | 136 |
| 2016 | 169 |
| 2017 | 158 |
| 2018 | 164 |
| 2019 | 178 |
| 2020 | 167 |
| 2021 | 172 |
| 2022 | 185 |
| 2023 | 147 |
| 2024 | 54 |