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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 2 |
| 1968 | 1 |
| 1969 | 7 |
| 1970 | 11 |
| 1971 | 11 |
| 1972 | 36 |
| 1973 | 48 |
| 1974 | 65 |
| 1975 | 38 |
| 1976 | 52 |
| 1977 | 34 |
| 1978 | 43 |
| 1979 | 85 |
| 1980 | 40 |
| 1981 | 49 |
| 1982 | 44 |
| 1983 | 50 |
| 1984 | 61 |
| 1985 | 69 |
| 1986 | 82 |
| 1987 | 89 |
| 1988 | 99 |
| 1989 | 140 |
| 1990 | 105 |
| 1991 | 107 |
| 1992 | 126 |
| 1993 | 122 |
| 1994 | 97 |
| 1995 | 115 |
| 1996 | 138 |
| 1997 | 159 |
| 1998 | 155 |
| 1999 | 189 |
| 2000 | 252 |
| 2001 | 265 |
| 2002 | 211 |
| 2003 | 198 |
| 2004 | 226 |
| 2005 | 248 |
| 2006 | 253 |
| 2007 | 288 |
| 2008 | 297 |
| 2009 | 308 |
| 2010 | 320 |
| 2011 | 325 |
| 2012 | 317 |
| 2013 | 287 |
| 2014 | 306 |
| 2015 | 310 |
| 2016 | 250 |
| 2017 | 281 |
| 2018 | 293 |
| 2019 | 277 |
| 2020 | 291 |
| 2021 | 241 |
| 2022 | 233 |
| 2023 | 209 |
| 2024 | 69 |