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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 2 |
| 1965 | 8 |
| 1966 | 42 |
| 1967 | 48 |
| 1968 | 33 |
| 1969 | 72 |
| 1970 | 53 |
| 1971 | 74 |
| 1972 | 58 |
| 1973 | 84 |
| 1974 | 97 |
| 1975 | 84 |
| 1976 | 116 |
| 1977 | 97 |
| 1978 | 103 |
| 1979 | 103 |
| 1980 | 116 |
| 1981 | 90 |
| 1982 | 138 |
| 1983 | 115 |
| 1984 | 107 |
| 1985 | 89 |
| 1986 | 84 |
| 1987 | 99 |
| 1988 | 97 |
| 1989 | 83 |
| 1990 | 106 |
| 1991 | 91 |
| 1992 | 103 |
| 1993 | 104 |
| 1994 | 102 |
| 1995 | 93 |
| 1996 | 116 |
| 1997 | 99 |
| 1998 | 98 |
| 1999 | 115 |
| 2000 | 145 |
| 2001 | 118 |
| 2002 | 111 |
| 2003 | 110 |
| 2004 | 119 |
| 2005 | 146 |
| 2006 | 154 |
| 2007 | 135 |
| 2008 | 159 |
| 2009 | 193 |
| 2010 | 192 |
| 2011 | 206 |
| 2012 | 226 |
| 2013 | 162 |
| 2014 | 177 |
| 2015 | 143 |
| 2016 | 155 |
| 2017 | 132 |
| 2018 | 133 |
| 2019 | 140 |
| 2020 | 118 |
| 2021 | 66 |
| 2022 | 27 |
| 2023 | 14 |
| 2024 | 4 |