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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 |
| 1966 | 10 |
| 1967 | 21 |
| 1968 | 75 |
| 1969 | 75 |
| 1970 | 80 |
| 1971 | 119 |
| 1972 | 111 |
| 1973 | 121 |
| 1974 | 130 |
| 1975 | 108 |
| 1976 | 82 |
| 1977 | 89 |
| 1978 | 116 |
| 1979 | 120 |
| 1980 | 122 |
| 1981 | 125 |
| 1982 | 118 |
| 1983 | 126 |
| 1984 | 96 |
| 1985 | 94 |
| 1986 | 106 |
| 1987 | 72 |
| 1988 | 76 |
| 1989 | 90 |
| 1990 | 111 |
| 1991 | 98 |
| 1992 | 109 |
| 1993 | 130 |
| 1994 | 128 |
| 1995 | 134 |
| 1996 | 137 |
| 1997 | 146 |
| 1998 | 150 |
| 1999 | 192 |
| 2000 | 207 |
| 2001 | 174 |
| 2002 | 189 |
| 2003 | 229 |
| 2004 | 223 |
| 2005 | 233 |
| 2006 | 256 |
| 2007 | 268 |
| 2008 | 272 |
| 2009 | 294 |
| 2010 | 322 |
| 2011 | 330 |
| 2012 | 355 |
| 2013 | 356 |
| 2014 | 330 |
| 2015 | 312 |
| 2016 | 277 |
| 2017 | 252 |
| 2018 | 225 |
| 2019 | 231 |
| 2020 | 203 |
| 2021 | 130 |
| 2022 | 76 |
| 2023 | 52 |
| 2024 | 23 |