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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 1 |
| 1966 | 41 |
| 1967 | 88 |
| 1968 | 132 |
| 1969 | 119 |
| 1970 | 110 |
| 1971 | 94 |
| 1972 | 113 |
| 1973 | 151 |
| 1974 | 131 |
| 1975 | 77 |
| 1976 | 34 |
| 1977 | 30 |
| 1978 | 27 |
| 1979 | 32 |
| 1980 | 31 |
| 1981 | 20 |
| 1982 | 35 |
| 1983 | 25 |
| 1984 | 32 |
| 1985 | 34 |
| 1986 | 37 |
| 1987 | 38 |
| 1988 | 38 |
| 1989 | 40 |
| 1990 | 70 |
| 1991 | 55 |
| 1992 | 66 |
| 1993 | 77 |
| 1994 | 68 |
| 1995 | 69 |
| 1996 | 93 |
| 1997 | 140 |
| 1998 | 161 |
| 1999 | 112 |
| 2000 | 113 |
| 2001 | 125 |
| 2002 | 98 |
| 2003 | 119 |
| 2004 | 162 |
| 2005 | 201 |
| 2006 | 213 |
| 2007 | 191 |
| 2008 | 138 |
| 2009 | 138 |
| 2010 | 120 |
| 2011 | 99 |
| 2012 | 127 |
| 2013 | 101 |
| 2014 | 91 |
| 2015 | 80 |
| 2016 | 96 |
| 2017 | 104 |
| 2018 | 137 |
| 2019 | 201 |
| 2020 | 155 |
| 2021 | 63 |
| 2022 | 3 |
| 2024 | 1 |