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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1964 | 2 |
| 1965 | 14 |
| 1966 | 11 |
| 1967 | 35 |
| 1968 | 51 |
| 1969 | 59 |
| 1970 | 86 |
| 1971 | 99 |
| 1972 | 99 |
| 1973 | 76 |
| 1974 | 76 |
| 1975 | 53 |
| 1976 | 65 |
| 1977 | 66 |
| 1978 | 73 |
| 1979 | 66 |
| 1980 | 69 |
| 1981 | 73 |
| 1982 | 89 |
| 1983 | 88 |
| 1984 | 91 |
| 1985 | 99 |
| 1986 | 116 |
| 1987 | 123 |
| 1988 | 103 |
| 1989 | 96 |
| 1990 | 141 |
| 1991 | 118 |
| 1992 | 120 |
| 1993 | 135 |
| 1994 | 150 |
| 1995 | 106 |
| 1996 | 159 |
| 1997 | 142 |
| 1998 | 149 |
| 1999 | 160 |
| 2000 | 156 |
| 2001 | 160 |
| 2002 | 206 |
| 2003 | 203 |
| 2004 | 170 |
| 2005 | 155 |
| 2006 | 162 |
| 2007 | 152 |
| 2008 | 153 |
| 2009 | 122 |
| 2010 | 119 |
| 2011 | 125 |
| 2012 | 133 |
| 2013 | 134 |
| 2014 | 102 |
| 2015 | 92 |
| 2016 | 106 |
| 2017 | 77 |
| 2018 | 92 |
| 2019 | 80 |
| 2020 | 61 |
| 2021 | 38 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 0 |