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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 2 |
| 1965 | 7 |
| 1966 | 18 |
| 1967 | 47 |
| 1968 | 72 |
| 1969 | 70 |
| 1970 | 85 |
| 1971 | 100 |
| 1972 | 160 |
| 1973 | 232 |
| 1974 | 256 |
| 1975 | 241 |
| 1976 | 250 |
| 1977 | 279 |
| 1978 | 252 |
| 1979 | 234 |
| 1980 | 259 |
| 1981 | 233 |
| 1982 | 197 |
| 1983 | 199 |
| 1984 | 192 |
| 1985 | 176 |
| 1986 | 169 |
| 1987 | 205 |
| 1988 | 182 |
| 1989 | 184 |
| 1990 | 180 |
| 1991 | 168 |
| 1992 | 148 |
| 1993 | 160 |
| 1994 | 132 |
| 1995 | 124 |
| 1996 | 132 |
| 1997 | 147 |
| 1998 | 108 |
| 1999 | 115 |
| 2000 | 113 |
| 2001 | 109 |
| 2002 | 99 |
| 2003 | 123 |
| 2004 | 131 |
| 2005 | 130 |
| 2006 | 121 |
| 2007 | 113 |
| 2008 | 137 |
| 2009 | 112 |
| 2010 | 121 |
| 2011 | 108 |
| 2012 | 117 |
| 2013 | 125 |
| 2014 | 115 |
| 2015 | 122 |
| 2016 | 117 |
| 2017 | 102 |
| 2018 | 104 |
| 2019 | 92 |
| 2020 | 75 |
| 2021 | 63 |
| 2022 | 39 |
| 2023 | 23 |
| 2024 | 5 |