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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1966 | 3 |
| 1967 | 2 |
| 1968 | 7 |
| 1969 | 10 |
| 1970 | 6 |
| 1971 | 9 |
| 1972 | 6 |
| 1973 | 10 |
| 1974 | 13 |
| 1975 | 19 |
| 1976 | 16 |
| 1977 | 40 |
| 1978 | 75 |
| 1979 | 153 |
| 1980 | 118 |
| 1981 | 81 |
| 1982 | 126 |
| 1983 | 108 |
| 1984 | 122 |
| 1985 | 107 |
| 1986 | 119 |
| 1987 | 126 |
| 1988 | 143 |
| 1989 | 172 |
| 1990 | 212 |
| 1991 | 179 |
| 1992 | 159 |
| 1993 | 168 |
| 1994 | 147 |
| 1995 | 136 |
| 1996 | 124 |
| 1997 | 179 |
| 1998 | 228 |
| 1999 | 209 |
| 2000 | 191 |
| 2001 | 240 |
| 2002 | 206 |
| 2003 | 252 |
| 2004 | 321 |
| 2005 | 273 |
| 2006 | 246 |
| 2007 | 315 |
| 2008 | 268 |
| 2009 | 283 |
| 2010 | 295 |
| 2011 | 295 |
| 2012 | 280 |
| 2013 | 289 |
| 2014 | 283 |
| 2015 | 350 |
| 2016 | 332 |
| 2017 | 326 |
| 2018 | 332 |
| 2019 | 296 |
| 2020 | 222 |
| 2021 | 83 |
| 2022 | 8 |
| 2023 | 4 |
| 2024 | 1 |