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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 21 |
| 1960 | 72 |
| 1961 | 62 |
| 1962 | 55 |
| 1963 | 1 |
| 1964 | 4 |
| 1965 | 63 |
| 1966 | 95 |
| 1967 | 109 |
| 1968 | 119 |
| 1969 | 130 |
| 1970 | 128 |
| 1971 | 154 |
| 1972 | 130 |
| 1973 | 108 |
| 1974 | 149 |
| 1975 | 155 |
| 1976 | 99 |
| 1977 | 134 |
| 1978 | 128 |
| 1979 | 165 |
| 1980 | 181 |
| 1981 | 200 |
| 1982 | 213 |
| 1983 | 268 |
| 1984 | 251 |
| 1985 | 326 |
| 1986 | 249 |
| 1987 | 293 |
| 1988 | 363 |
| 1989 | 368 |
| 1990 | 372 |
| 1991 | 449 |
| 1992 | 486 |
| 1993 | 395 |
| 1994 | 441 |
| 1995 | 686 |
| 1996 | 701 |
| 1997 | 829 |
| 1998 | 857 |
| 1999 | 901 |
| 2000 | 896 |
| 2001 | 1043 |
| 2002 | 969 |
| 2003 | 974 |
| 2004 | 976 |
| 2005 | 849 |
| 2006 | 996 |
| 2007 | 990 |
| 2008 | 1113 |
| 2009 | 1160 |
| 2010 | 1216 |
| 2011 | 1230 |
| 2012 | 1320 |
| 2013 | 1198 |
| 2014 | 1165 |
| 2015 | 1056 |
| 2016 | 1038 |
| 2017 | 1027 |
| 2018 | 976 |
| 2019 | 956 |
| 2020 | 954 |
| 2021 | 815 |
| 2022 | 598 |
| 2023 | 594 |
| 2024 | 234 |