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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 |
| 1956 | 3 |
| 1957 | 2 |
| 1958 | 5 |
| 1965 | 2 |
| 1966 | 5 |
| 1967 | 12 |
| 1968 | 9 |
| 1969 | 5 |
| 1970 | 17 |
| 1971 | 21 |
| 1972 | 38 |
| 1973 | 42 |
| 1974 | 38 |
| 1975 | 36 |
| 1976 | 33 |
| 1977 | 29 |
| 1978 | 25 |
| 1979 | 34 |
| 1980 | 21 |
| 1981 | 30 |
| 1982 | 45 |
| 1983 | 42 |
| 1984 | 43 |
| 1985 | 53 |
| 1986 | 58 |
| 1987 | 50 |
| 1988 | 76 |
| 1989 | 71 |
| 1990 | 81 |
| 1991 | 95 |
| 1992 | 69 |
| 1993 | 97 |
| 1994 | 87 |
| 1995 | 108 |
| 1996 | 85 |
| 1997 | 115 |
| 1998 | 139 |
| 1999 | 117 |
| 2000 | 105 |
| 2001 | 133 |
| 2002 | 131 |
| 2003 | 132 |
| 2004 | 161 |
| 2005 | 150 |
| 2006 | 149 |
| 2007 | 209 |
| 2008 | 182 |
| 2009 | 250 |
| 2010 | 247 |
| 2011 | 270 |
| 2012 | 332 |
| 2013 | 417 |
| 2014 | 309 |
| 2015 | 302 |
| 2016 | 303 |
| 2017 | 268 |
| 2018 | 287 |
| 2019 | 289 |
| 2020 | 255 |
| 2021 | 166 |
| 2022 | 119 |
| 2023 | 89 |
| 2024 | 177 |
| 2025 | 123 |