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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 1 |
| 1970 | 1 |
| 1971 | 1 |
| 1973 | 1 |
| 1975 | 3 |
| 1976 | 15 |
| 1977 | 11 |
| 1978 | 13 |
| 1979 | 80 |
| 1980 | 83 |
| 1981 | 110 |
| 1982 | 84 |
| 1983 | 95 |
| 1984 | 81 |
| 1985 | 67 |
| 1986 | 101 |
| 1987 | 100 |
| 1988 | 115 |
| 1989 | 178 |
| 1990 | 186 |
| 1991 | 175 |
| 1992 | 189 |
| 1993 | 225 |
| 1994 | 213 |
| 1995 | 269 |
| 1996 | 303 |
| 1997 | 265 |
| 1998 | 261 |
| 1999 | 276 |
| 2000 | 270 |
| 2001 | 250 |
| 2002 | 203 |
| 2003 | 209 |
| 2004 | 236 |
| 2005 | 208 |
| 2006 | 223 |
| 2007 | 244 |
| 2008 | 257 |
| 2009 | 270 |
| 2010 | 249 |
| 2011 | 302 |
| 2012 | 276 |
| 2013 | 278 |
| 2014 | 233 |
| 2015 | 238 |
| 2016 | 206 |
| 2017 | 151 |
| 2018 | 174 |
| 2019 | 165 |
| 2020 | 179 |
| 2021 | 168 |
| 2022 | 41 |
| 2023 | 4 |
| 2024 | 0 |