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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1961 | 1 |
| 1967 | 1 |
| 1971 | 8 |
| 1972 | 33 |
| 1973 | 126 |
| 1974 | 120 |
| 1975 | 102 |
| 1976 | 80 |
| 1977 | 73 |
| 1978 | 76 |
| 1979 | 101 |
| 1980 | 88 |
| 1981 | 78 |
| 1982 | 79 |
| 1983 | 91 |
| 1984 | 85 |
| 1985 | 123 |
| 1986 | 128 |
| 1987 | 82 |
| 1988 | 91 |
| 1989 | 93 |
| 1990 | 103 |
| 1991 | 96 |
| 1992 | 117 |
| 1993 | 154 |
| 1994 | 175 |
| 1995 | 160 |
| 1996 | 152 |
| 1997 | 141 |
| 1998 | 128 |
| 1999 | 106 |
| 2000 | 113 |
| 2001 | 100 |
| 2002 | 88 |
| 2003 | 60 |
| 2004 | 72 |
| 2005 | 68 |
| 2006 | 63 |
| 2007 | 83 |
| 2008 | 75 |
| 2009 | 60 |
| 2010 | 66 |
| 2011 | 55 |
| 2012 | 55 |
| 2013 | 43 |
| 2014 | 40 |
| 2015 | 45 |
| 2016 | 50 |
| 2017 | 42 |
| 2018 | 40 |
| 2019 | 35 |
| 2020 | 28 |
| 2021 | 23 |
| 2022 | 6 |
| 2023 | 2 |
| 2024 | 0 |