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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 4 |
| 1966 | 17 |
| 1967 | 32 |
| 1968 | 45 |
| 1969 | 51 |
| 1970 | 49 |
| 1971 | 86 |
| 1972 | 89 |
| 1973 | 103 |
| 1974 | 106 |
| 1975 | 96 |
| 1976 | 83 |
| 1977 | 75 |
| 1978 | 90 |
| 1979 | 91 |
| 1980 | 88 |
| 1981 | 85 |
| 1982 | 103 |
| 1983 | 99 |
| 1984 | 96 |
| 1985 | 88 |
| 1986 | 97 |
| 1987 | 77 |
| 1988 | 90 |
| 1989 | 104 |
| 1990 | 103 |
| 1991 | 102 |
| 1992 | 106 |
| 1993 | 122 |
| 1994 | 115 |
| 1995 | 104 |
| 1996 | 97 |
| 1997 | 95 |
| 1998 | 85 |
| 1999 | 55 |
| 2000 | 77 |
| 2001 | 73 |
| 2002 | 61 |
| 2003 | 61 |
| 2004 | 66 |
| 2005 | 80 |
| 2006 | 113 |
| 2007 | 118 |
| 2008 | 128 |
| 2009 | 138 |
| 2010 | 165 |
| 2011 | 162 |
| 2012 | 221 |
| 2013 | 194 |
| 2014 | 194 |
| 2015 | 254 |
| 2016 | 275 |
| 2017 | 265 |
| 2018 | 272 |
| 2019 | 305 |
| 2020 | 319 |
| 2021 | 195 |
| 2022 | 21 |
| 2023 | 8 |
| 2024 | 39 |