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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 1 |
| 1953 | 1 |
| 1959 | 2 |
| 1960 | 1 |
| 1961 | 1 |
| 1962 | 2 |
| 1963 | 27 |
| 1964 | 21 |
| 1965 | 40 |
| 1966 | 47 |
| 1967 | 91 |
| 1968 | 92 |
| 1969 | 134 |
| 1970 | 128 |
| 1971 | 127 |
| 1972 | 124 |
| 1973 | 120 |
| 1974 | 137 |
| 1975 | 158 |
| 1976 | 119 |
| 1977 | 85 |
| 1978 | 97 |
| 1979 | 98 |
| 1980 | 71 |
| 1981 | 64 |
| 1982 | 61 |
| 1983 | 65 |
| 1984 | 90 |
| 1985 | 102 |
| 1986 | 98 |
| 1987 | 100 |
| 1988 | 118 |
| 1989 | 128 |
| 1990 | 165 |
| 1991 | 175 |
| 1992 | 196 |
| 1993 | 222 |
| 1994 | 200 |
| 1995 | 230 |
| 1996 | 231 |
| 1997 | 240 |
| 1998 | 266 |
| 1999 | 256 |
| 2000 | 230 |
| 2001 | 275 |
| 2002 | 273 |
| 2003 | 312 |
| 2004 | 264 |
| 2005 | 262 |
| 2006 | 297 |
| 2007 | 326 |
| 2008 | 308 |
| 2009 | 297 |
| 2010 | 303 |
| 2011 | 314 |
| 2012 | 336 |
| 2013 | 310 |
| 2014 | 324 |
| 2015 | 410 |
| 2016 | 405 |
| 2017 | 399 |
| 2018 | 453 |
| 2019 | 424 |
| 2020 | 301 |
| 2021 | 286 |
| 2022 | 148 |
| 2023 | 97 |
| 2024 | 193 |
| 2025 | 137 |