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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1958 | 1 |
| 1963 | 1 |
| 1965 | 1 |
| 1966 | 6 |
| 1967 | 19 |
| 1968 | 20 |
| 1969 | 33 |
| 1970 | 52 |
| 1971 | 59 |
| 1972 | 105 |
| 1973 | 117 |
| 1974 | 130 |
| 1975 | 93 |
| 1976 | 52 |
| 1977 | 75 |
| 1978 | 63 |
| 1979 | 40 |
| 1980 | 61 |
| 1981 | 42 |
| 1982 | 50 |
| 1983 | 71 |
| 1984 | 68 |
| 1985 | 85 |
| 1986 | 83 |
| 1987 | 98 |
| 1988 | 108 |
| 1989 | 119 |
| 1990 | 113 |
| 1991 | 123 |
| 1992 | 130 |
| 1993 | 137 |
| 1994 | 138 |
| 1995 | 179 |
| 1996 | 159 |
| 1997 | 189 |
| 1998 | 176 |
| 1999 | 221 |
| 2000 | 270 |
| 2001 | 272 |
| 2002 | 289 |
| 2003 | 273 |
| 2004 | 252 |
| 2005 | 288 |
| 2006 | 259 |
| 2007 | 263 |
| 2008 | 269 |
| 2009 | 262 |
| 2010 | 241 |
| 2011 | 240 |
| 2012 | 245 |
| 2013 | 223 |
| 2014 | 206 |
| 2015 | 216 |
| 2016 | 191 |
| 2017 | 191 |
| 2018 | 178 |
| 2019 | 172 |
| 2020 | 143 |
| 2021 | 77 |
| 2022 | 11 |
| 2023 | 1 |
| 2024 | 2 |