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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1961 | 1 |
| 1962 | 2 |
| 1965 | 1 |
| 1967 | 4 |
| 1970 | 6 |
| 1971 | 10 |
| 1972 | 34 |
| 1973 | 57 |
| 1974 | 84 |
| 1975 | 148 |
| 1976 | 133 |
| 1977 | 120 |
| 1978 | 139 |
| 1979 | 180 |
| 1980 | 196 |
| 1981 | 232 |
| 1982 | 288 |
| 1983 | 279 |
| 1984 | 262 |
| 1985 | 283 |
| 1986 | 274 |
| 1987 | 293 |
| 1988 | 259 |
| 1989 | 225 |
| 1990 | 289 |
| 1991 | 281 |
| 1992 | 237 |
| 1993 | 253 |
| 1994 | 228 |
| 1995 | 259 |
| 1996 | 212 |
| 1997 | 218 |
| 1998 | 246 |
| 1999 | 198 |
| 2000 | 185 |
| 2001 | 165 |
| 2002 | 191 |
| 2003 | 210 |
| 2004 | 193 |
| 2005 | 193 |
| 2006 | 196 |
| 2007 | 198 |
| 2008 | 205 |
| 2009 | 173 |
| 2010 | 169 |
| 2011 | 146 |
| 2012 | 170 |
| 2013 | 163 |
| 2014 | 166 |
| 2015 | 138 |
| 2016 | 97 |
| 2017 | 87 |
| 2018 | 69 |
| 2019 | 69 |
| 2020 | 68 |
| 2021 | 48 |
| 2022 | 12 |
| 2023 | 8 |
| 2024 | 2 |