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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1970 | 1 |
| 1971 | 11 |
| 1972 | 26 |
| 1973 | 40 |
| 1974 | 33 |
| 1975 | 55 |
| 1976 | 41 |
| 1977 | 49 |
| 1978 | 64 |
| 1979 | 49 |
| 1980 | 64 |
| 1981 | 87 |
| 1982 | 83 |
| 1983 | 116 |
| 1984 | 161 |
| 1985 | 220 |
| 1986 | 227 |
| 1987 | 230 |
| 1988 | 281 |
| 1989 | 296 |
| 1990 | 335 |
| 1991 | 290 |
| 1992 | 283 |
| 1993 | 280 |
| 1994 | 259 |
| 1995 | 258 |
| 1996 | 247 |
| 1997 | 246 |
| 1998 | 225 |
| 1999 | 212 |
| 2000 | 183 |
| 2001 | 187 |
| 2002 | 170 |
| 2003 | 151 |
| 2004 | 134 |
| 2005 | 132 |
| 2006 | 115 |
| 2007 | 120 |
| 2008 | 118 |
| 2009 | 118 |
| 2010 | 110 |
| 2011 | 103 |
| 2012 | 105 |
| 2013 | 103 |
| 2014 | 67 |
| 2015 | 80 |
| 2016 | 66 |
| 2017 | 51 |
| 2018 | 45 |
| 2019 | 47 |
| 2020 | 36 |
| 2021 | 28 |
| 2022 | 29 |
| 2023 | 18 |
| 2024 | 28 |
| 2025 | 21 |