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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 7 |
| 1966 | 27 |
| 1967 | 35 |
| 1968 | 42 |
| 1969 | 65 |
| 1970 | 50 |
| 1971 | 63 |
| 1972 | 55 |
| 1973 | 57 |
| 1974 | 63 |
| 1975 | 44 |
| 1976 | 33 |
| 1977 | 56 |
| 1978 | 64 |
| 1979 | 46 |
| 1980 | 66 |
| 1981 | 53 |
| 1982 | 83 |
| 1983 | 85 |
| 1984 | 75 |
| 1985 | 97 |
| 1986 | 84 |
| 1987 | 74 |
| 1988 | 104 |
| 1989 | 110 |
| 1990 | 95 |
| 1991 | 98 |
| 1992 | 112 |
| 1993 | 110 |
| 1994 | 125 |
| 1995 | 129 |
| 1996 | 138 |
| 1997 | 149 |
| 1998 | 148 |
| 1999 | 178 |
| 2000 | 175 |
| 2001 | 186 |
| 2002 | 210 |
| 2003 | 178 |
| 2004 | 212 |
| 2005 | 190 |
| 2006 | 209 |
| 2007 | 248 |
| 2008 | 258 |
| 2009 | 229 |
| 2010 | 280 |
| 2011 | 268 |
| 2012 | 291 |
| 2013 | 282 |
| 2014 | 256 |
| 2015 | 248 |
| 2016 | 218 |
| 2017 | 215 |
| 2018 | 204 |
| 2019 | 228 |
| 2020 | 249 |
| 2021 | 282 |
| 2022 | 269 |
| 2023 | 238 |
| 2024 | 74 |