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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1971 | 1 |
| 1973 | 1 |
| 1975 | 1 |
| 1976 | 2 |
| 1977 | 3 |
| 1978 | 5 |
| 1979 | 12 |
| 1980 | 25 |
| 1981 | 32 |
| 1982 | 28 |
| 1983 | 39 |
| 1984 | 39 |
| 1985 | 52 |
| 1986 | 94 |
| 1987 | 114 |
| 1988 | 78 |
| 1989 | 121 |
| 1990 | 229 |
| 1991 | 250 |
| 1992 | 245 |
| 1993 | 352 |
| 1994 | 452 |
| 1995 | 478 |
| 1996 | 281 |
| 1997 | 272 |
| 1998 | 270 |
| 1999 | 230 |
| 2000 | 218 |
| 2001 | 171 |
| 2002 | 155 |
| 2003 | 247 |
| 2004 | 224 |
| 2005 | 291 |
| 2006 | 240 |
| 2007 | 204 |
| 2008 | 173 |
| 2009 | 182 |
| 2010 | 124 |
| 2011 | 129 |
| 2012 | 98 |
| 2013 | 101 |
| 2014 | 85 |
| 2015 | 72 |
| 2016 | 65 |
| 2017 | 56 |
| 2018 | 53 |
| 2019 | 42 |
| 2020 | 55 |
| 2021 | 58 |
| 2022 | 11 |
| 2023 | 5 |
| 2024 | 2 |