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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1966 | 1 |
| 1971 | 3 |
| 1973 | 1 |
| 1974 | 18 |
| 1975 | 4 |
| 1976 | 3 |
| 1977 | 12 |
| 1978 | 3 |
| 1979 | 4 |
| 1980 | 4 |
| 1981 | 6 |
| 1982 | 8 |
| 1983 | 4 |
| 1984 | 6 |
| 1985 | 6 |
| 1986 | 8 |
| 1987 | 19 |
| 1988 | 17 |
| 1989 | 28 |
| 1990 | 50 |
| 1991 | 66 |
| 1992 | 89 |
| 1993 | 74 |
| 1994 | 83 |
| 1995 | 71 |
| 1996 | 69 |
| 1997 | 44 |
| 1998 | 61 |
| 1999 | 58 |
| 2000 | 46 |
| 2001 | 43 |
| 2002 | 44 |
| 2003 | 62 |
| 2004 | 112 |
| 2005 | 83 |
| 2006 | 82 |
| 2007 | 105 |
| 2008 | 113 |
| 2009 | 112 |
| 2010 | 524 |
| 2011 | 558 |
| 2012 | 452 |
| 2013 | 451 |
| 2014 | 235 |
| 2015 | 177 |
| 2016 | 107 |
| 2017 | 105 |
| 2018 | 72 |
| 2019 | 59 |
| 2020 | 55 |
| 2021 | 29 |
| 2022 | 13 |
| 2024 | 11 |