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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 1 |
| 1964 | 1 |
| 1965 | 4 |
| 1966 | 15 |
| 1967 | 16 |
| 1968 | 27 |
| 1969 | 29 |
| 1970 | 34 |
| 1971 | 20 |
| 1972 | 57 |
| 1973 | 91 |
| 1974 | 113 |
| 1975 | 102 |
| 1976 | 77 |
| 1977 | 49 |
| 1978 | 74 |
| 1979 | 52 |
| 1980 | 45 |
| 1981 | 39 |
| 1982 | 69 |
| 1983 | 85 |
| 1984 | 122 |
| 1985 | 99 |
| 1986 | 127 |
| 1987 | 111 |
| 1988 | 123 |
| 1989 | 108 |
| 1990 | 112 |
| 1991 | 140 |
| 1992 | 133 |
| 1993 | 149 |
| 1994 | 142 |
| 1995 | 145 |
| 1996 | 187 |
| 1997 | 178 |
| 1998 | 177 |
| 1999 | 214 |
| 2000 | 174 |
| 2001 | 178 |
| 2002 | 174 |
| 2003 | 169 |
| 2004 | 118 |
| 2005 | 97 |
| 2006 | 83 |
| 2007 | 105 |
| 2008 | 100 |
| 2009 | 65 |
| 2010 | 75 |
| 2011 | 71 |
| 2012 | 86 |
| 2013 | 63 |
| 2014 | 55 |
| 2015 | 72 |
| 2016 | 48 |
| 2017 | 39 |
| 2018 | 51 |
| 2019 | 39 |
| 2020 | 52 |
| 2021 | 34 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 8 |