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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1960 | 1 |
| 1961 | 5 |
| 1962 | 2 |
| 1965 | 3 |
| 1966 | 8 |
| 1967 | 19 |
| 1968 | 47 |
| 1969 | 51 |
| 1970 | 73 |
| 1971 | 65 |
| 1972 | 75 |
| 1973 | 67 |
| 1974 | 71 |
| 1975 | 56 |
| 1976 | 85 |
| 1977 | 67 |
| 1978 | 88 |
| 1979 | 62 |
| 1980 | 80 |
| 1981 | 108 |
| 1982 | 100 |
| 1983 | 98 |
| 1984 | 116 |
| 1985 | 114 |
| 1986 | 133 |
| 1987 | 118 |
| 1988 | 79 |
| 1989 | 100 |
| 1990 | 100 |
| 1991 | 97 |
| 1992 | 75 |
| 1993 | 58 |
| 1994 | 76 |
| 1995 | 69 |
| 1996 | 66 |
| 1997 | 56 |
| 1998 | 71 |
| 1999 | 70 |
| 2000 | 83 |
| 2001 | 87 |
| 2002 | 108 |
| 2003 | 82 |
| 2004 | 81 |
| 2005 | 87 |
| 2006 | 100 |
| 2007 | 133 |
| 2008 | 108 |
| 2009 | 106 |
| 2010 | 145 |
| 2011 | 144 |
| 2012 | 147 |
| 2013 | 163 |
| 2014 | 156 |
| 2015 | 172 |
| 2016 | 144 |
| 2017 | 157 |
| 2018 | 166 |
| 2019 | 165 |
| 2020 | 126 |
| 2021 | 125 |
| 2022 | 112 |
| 2023 | 78 |
| 2024 | 21 |