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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1956 | 1 |
| 1964 | 1 |
| 1965 | 4 |
| 1966 | 13 |
| 1967 | 19 |
| 1968 | 22 |
| 1969 | 17 |
| 1970 | 27 |
| 1971 | 43 |
| 1972 | 34 |
| 1973 | 22 |
| 1974 | 34 |
| 1975 | 35 |
| 1976 | 42 |
| 1977 | 61 |
| 1978 | 48 |
| 1979 | 64 |
| 1980 | 64 |
| 1981 | 62 |
| 1982 | 91 |
| 1983 | 126 |
| 1984 | 118 |
| 1985 | 129 |
| 1986 | 121 |
| 1987 | 96 |
| 1988 | 102 |
| 1989 | 101 |
| 1990 | 95 |
| 1991 | 102 |
| 1992 | 123 |
| 1993 | 104 |
| 1994 | 94 |
| 1995 | 96 |
| 1996 | 101 |
| 1997 | 106 |
| 1998 | 134 |
| 1999 | 105 |
| 2000 | 100 |
| 2001 | 92 |
| 2002 | 131 |
| 2003 | 100 |
| 2004 | 124 |
| 2005 | 129 |
| 2006 | 108 |
| 2007 | 95 |
| 2008 | 132 |
| 2009 | 129 |
| 2010 | 114 |
| 2011 | 119 |
| 2012 | 150 |
| 2013 | 142 |
| 2014 | 144 |
| 2015 | 132 |
| 2016 | 137 |
| 2017 | 142 |
| 2018 | 118 |
| 2019 | 117 |
| 2020 | 150 |
| 2021 | 140 |
| 2022 | 124 |
| 2023 | 96 |
| 2024 | 86 |