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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 4 |
| 1965 | 10 |
| 1966 | 21 |
| 1967 | 29 |
| 1968 | 23 |
| 1969 | 19 |
| 1970 | 26 |
| 1971 | 39 |
| 1972 | 22 |
| 1973 | 37 |
| 1974 | 39 |
| 1975 | 28 |
| 1976 | 46 |
| 1977 | 65 |
| 1978 | 57 |
| 1979 | 77 |
| 1980 | 58 |
| 1981 | 55 |
| 1982 | 45 |
| 1983 | 52 |
| 1984 | 87 |
| 1985 | 77 |
| 1986 | 87 |
| 1987 | 95 |
| 1988 | 106 |
| 1989 | 102 |
| 1990 | 121 |
| 1991 | 125 |
| 1992 | 119 |
| 1993 | 157 |
| 1994 | 164 |
| 1995 | 180 |
| 1996 | 166 |
| 1997 | 191 |
| 1998 | 194 |
| 1999 | 202 |
| 2000 | 145 |
| 2001 | 168 |
| 2002 | 211 |
| 2003 | 198 |
| 2004 | 206 |
| 2005 | 222 |
| 2006 | 232 |
| 2007 | 226 |
| 2008 | 211 |
| 2009 | 208 |
| 2010 | 203 |
| 2011 | 228 |
| 2012 | 187 |
| 2013 | 181 |
| 2014 | 172 |
| 2015 | 152 |
| 2016 | 164 |
| 2017 | 136 |
| 2018 | 103 |
| 2019 | 105 |
| 2020 | 95 |
| 2021 | 62 |
| 2022 | 12 |
| 2023 | 4 |
| 2024 | 0 |