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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 9 |
| 1966 | 10 |
| 1967 | 29 |
| 1968 | 12 |
| 1969 | 18 |
| 1970 | 26 |
| 1971 | 26 |
| 1972 | 26 |
| 1973 | 41 |
| 1974 | 44 |
| 1975 | 69 |
| 1976 | 43 |
| 1977 | 75 |
| 1978 | 66 |
| 1979 | 74 |
| 1980 | 108 |
| 1981 | 90 |
| 1982 | 70 |
| 1983 | 75 |
| 1984 | 89 |
| 1985 | 100 |
| 1986 | 104 |
| 1987 | 101 |
| 1988 | 108 |
| 1989 | 95 |
| 1990 | 98 |
| 1991 | 128 |
| 1992 | 114 |
| 1993 | 118 |
| 1994 | 157 |
| 1995 | 136 |
| 1996 | 156 |
| 1997 | 118 |
| 1998 | 118 |
| 1999 | 97 |
| 2000 | 106 |
| 2001 | 94 |
| 2002 | 83 |
| 2003 | 101 |
| 2004 | 83 |
| 2005 | 106 |
| 2006 | 129 |
| 2007 | 157 |
| 2008 | 131 |
| 2009 | 104 |
| 2010 | 127 |
| 2011 | 130 |
| 2012 | 134 |
| 2013 | 135 |
| 2014 | 125 |
| 2015 | 132 |
| 2016 | 122 |
| 2017 | 170 |
| 2018 | 153 |
| 2019 | 152 |
| 2020 | 128 |
| 2021 | 87 |
| 2022 | 11 |
| 2023 | 1 |
| 2024 | 6 |