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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1960 | 2 |
| 1961 | 2 |
| 1962 | 1 |
| 1965 | 1 |
| 1966 | 10 |
| 1967 | 14 |
| 1968 | 19 |
| 1969 | 13 |
| 1970 | 21 |
| 1971 | 17 |
| 1972 | 27 |
| 1973 | 38 |
| 1974 | 30 |
| 1975 | 37 |
| 1976 | 29 |
| 1977 | 31 |
| 1978 | 45 |
| 1979 | 42 |
| 1980 | 45 |
| 1981 | 55 |
| 1982 | 72 |
| 1983 | 54 |
| 1984 | 59 |
| 1985 | 52 |
| 1986 | 54 |
| 1987 | 57 |
| 1988 | 63 |
| 1989 | 76 |
| 1990 | 67 |
| 1991 | 71 |
| 1992 | 72 |
| 1993 | 71 |
| 1994 | 67 |
| 1995 | 73 |
| 1996 | 83 |
| 1997 | 84 |
| 1998 | 78 |
| 1999 | 82 |
| 2000 | 95 |
| 2001 | 102 |
| 2002 | 113 |
| 2003 | 135 |
| 2004 | 130 |
| 2005 | 115 |
| 2006 | 136 |
| 2007 | 192 |
| 2008 | 153 |
| 2009 | 154 |
| 2010 | 162 |
| 2011 | 173 |
| 2012 | 157 |
| 2013 | 154 |
| 2014 | 139 |
| 2015 | 124 |
| 2016 | 121 |
| 2017 | 103 |
| 2018 | 93 |
| 2019 | 73 |
| 2020 | 79 |
| 2021 | 49 |
| 2022 | 53 |
| 2023 | 51 |
| 2024 | 25 |