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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 1 |
| 1969 | 1 |
| 1970 | 5 |
| 1971 | 15 |
| 1972 | 19 |
| 1973 | 39 |
| 1974 | 21 |
| 1975 | 21 |
| 1976 | 21 |
| 1977 | 32 |
| 1978 | 30 |
| 1979 | 13 |
| 1980 | 32 |
| 1981 | 37 |
| 1982 | 41 |
| 1983 | 39 |
| 1984 | 45 |
| 1985 | 45 |
| 1986 | 31 |
| 1987 | 30 |
| 1988 | 36 |
| 1989 | 36 |
| 1990 | 40 |
| 1991 | 34 |
| 1992 | 40 |
| 1993 | 60 |
| 1994 | 66 |
| 1995 | 59 |
| 1996 | 73 |
| 1997 | 76 |
| 1998 | 84 |
| 1999 | 114 |
| 2000 | 104 |
| 2001 | 119 |
| 2002 | 115 |
| 2003 | 126 |
| 2004 | 143 |
| 2005 | 147 |
| 2006 | 174 |
| 2007 | 214 |
| 2008 | 220 |
| 2009 | 223 |
| 2010 | 221 |
| 2011 | 217 |
| 2012 | 253 |
| 2013 | 279 |
| 2014 | 306 |
| 2015 | 294 |
| 2016 | 304 |
| 2017 | 268 |
| 2018 | 288 |
| 2019 | 300 |
| 2020 | 283 |
| 2021 | 229 |
| 2022 | 200 |
| 2023 | 137 |
| 2024 | 62 |