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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1960 | 1 |
| 1966 | 1 |
| 1969 | 1 |
| 1970 | 1 |
| 1971 | 2 |
| 1972 | 1 |
| 1973 | 2 |
| 1974 | 1 |
| 1976 | 6 |
| 1979 | 1 |
| 1980 | 2 |
| 1982 | 1 |
| 1983 | 1 |
| 1984 | 2 |
| 1985 | 8 |
| 1986 | 16 |
| 1987 | 11 |
| 1988 | 26 |
| 1989 | 25 |
| 1990 | 22 |
| 1991 | 28 |
| 1992 | 20 |
| 1993 | 26 |
| 1994 | 38 |
| 1995 | 51 |
| 1996 | 56 |
| 1997 | 45 |
| 1998 | 53 |
| 1999 | 73 |
| 2000 | 63 |
| 2001 | 74 |
| 2002 | 58 |
| 2003 | 49 |
| 2004 | 67 |
| 2005 | 78 |
| 2006 | 111 |
| 2007 | 85 |
| 2008 | 99 |
| 2009 | 96 |
| 2010 | 111 |
| 2011 | 118 |
| 2012 | 121 |
| 2013 | 112 |
| 2014 | 108 |
| 2015 | 104 |
| 2016 | 93 |
| 2017 | 100 |
| 2018 | 102 |
| 2019 | 84 |
| 2020 | 83 |
| 2021 | 71 |
| 2022 | 81 |
| 2023 | 29 |