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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1969 | 1 |
| 1970 | 1 |
| 1971 | 16 |
| 1972 | 53 |
| 1973 | 76 |
| 1974 | 105 |
| 1975 | 132 |
| 1976 | 126 |
| 1977 | 175 |
| 1978 | 175 |
| 1979 | 200 |
| 1980 | 247 |
| 1981 | 289 |
| 1982 | 307 |
| 1983 | 337 |
| 1984 | 366 |
| 1985 | 376 |
| 1986 | 373 |
| 1987 | 350 |
| 1988 | 371 |
| 1989 | 416 |
| 1990 | 347 |
| 1991 | 382 |
| 1992 | 317 |
| 1993 | 368 |
| 1994 | 308 |
| 1995 | 307 |
| 1996 | 246 |
| 1997 | 274 |
| 1998 | 254 |
| 1999 | 231 |
| 2000 | 213 |
| 2001 | 207 |
| 2002 | 194 |
| 2003 | 176 |
| 2004 | 182 |
| 2005 | 182 |
| 2006 | 142 |
| 2007 | 132 |
| 2008 | 148 |
| 2009 | 132 |
| 2010 | 115 |
| 2011 | 138 |
| 2012 | 122 |
| 2013 | 102 |
| 2014 | 117 |
| 2015 | 105 |
| 2016 | 112 |
| 2017 | 79 |
| 2018 | 88 |
| 2019 | 65 |
| 2020 | 54 |
| 2021 | 36 |
| 2022 | 31 |
| 2023 | 3 |