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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 1 |
| 1970 | 1 |
| 1971 | 4 |
| 1972 | 59 |
| 1973 | 84 |
| 1974 | 96 |
| 1975 | 79 |
| 1976 | 56 |
| 1977 | 65 |
| 1978 | 94 |
| 1979 | 54 |
| 1980 | 63 |
| 1981 | 65 |
| 1982 | 62 |
| 1983 | 52 |
| 1984 | 75 |
| 1985 | 71 |
| 1986 | 76 |
| 1987 | 87 |
| 1988 | 103 |
| 1989 | 126 |
| 1990 | 121 |
| 1991 | 176 |
| 1992 | 133 |
| 1993 | 145 |
| 1994 | 145 |
| 1995 | 298 |
| 1996 | 366 |
| 1997 | 392 |
| 1998 | 446 |
| 1999 | 540 |
| 2000 | 631 |
| 2001 | 652 |
| 2002 | 557 |
| 2003 | 514 |
| 2004 | 580 |
| 2005 | 696 |
| 2006 | 781 |
| 2007 | 707 |
| 2008 | 745 |
| 2009 | 754 |
| 2010 | 509 |
| 2011 | 271 |
| 2012 | 262 |
| 2013 | 226 |
| 2014 | 216 |
| 2015 | 194 |
| 2016 | 181 |
| 2017 | 171 |
| 2018 | 145 |
| 2019 | 142 |
| 2020 | 126 |
| 2021 | 109 |
| 2022 | 62 |
| 2023 | 44 |
| 2024 | 31 |