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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 1 |
| 1960 | 1 |
| 1962 | 1 |
| 1967 | 1 |
| 1970 | 1 |
| 1971 | 16 |
| 1972 | 3 |
| 1973 | 1 |
| 1974 | 13 |
| 1975 | 9 |
| 1976 | 3 |
| 1977 | 3 |
| 1978 | 5 |
| 1979 | 81 |
| 1980 | 211 |
| 1981 | 231 |
| 1982 | 317 |
| 1983 | 293 |
| 1984 | 296 |
| 1985 | 265 |
| 1986 | 249 |
| 1987 | 361 |
| 1988 | 323 |
| 1989 | 253 |
| 1990 | 267 |
| 1991 | 226 |
| 1992 | 193 |
| 1993 | 186 |
| 1994 | 175 |
| 1995 | 164 |
| 1996 | 198 |
| 1997 | 154 |
| 1998 | 172 |
| 1999 | 144 |
| 2000 | 149 |
| 2001 | 139 |
| 2002 | 142 |
| 2003 | 132 |
| 2004 | 135 |
| 2005 | 179 |
| 2006 | 170 |
| 2007 | 170 |
| 2008 | 160 |
| 2009 | 193 |
| 2010 | 189 |
| 2011 | 173 |
| 2012 | 188 |
| 2013 | 194 |
| 2014 | 156 |
| 2015 | 215 |
| 2016 | 140 |
| 2017 | 119 |
| 2018 | 141 |
| 2019 | 134 |
| 2020 | 130 |
| 2021 | 117 |
| 2022 | 6 |
| 2023 | 6 |
| 2024 | 0 |