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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1960 | 30 |
| 1961 | 49 |
| 1962 | 76 |
| 1963 | 77 |
| 1964 | 70 |
| 1965 | 65 |
| 1966 | 94 |
| 1967 | 69 |
| 1968 | 81 |
| 1969 | 91 |
| 1970 | 82 |
| 1971 | 101 |
| 1972 | 80 |
| 1973 | 109 |
| 1974 | 96 |
| 1975 | 86 |
| 1976 | 81 |
| 1977 | 87 |
| 1978 | 109 |
| 1979 | 89 |
| 1980 | 113 |
| 1981 | 117 |
| 1982 | 105 |
| 1983 | 114 |
| 1984 | 115 |
| 1985 | 127 |
| 1986 | 110 |
| 1987 | 112 |
| 1988 | 141 |
| 1989 | 154 |
| 1990 | 156 |
| 1991 | 158 |
| 1992 | 185 |
| 1993 | 173 |
| 1994 | 181 |
| 1995 | 197 |
| 1996 | 187 |
| 1997 | 206 |
| 1998 | 215 |
| 1999 | 275 |
| 2000 | 248 |
| 2001 | 172 |
| 2002 | 191 |
| 2003 | 169 |
| 2004 | 163 |
| 2005 | 152 |
| 2006 | 150 |
| 2007 | 158 |
| 2008 | 147 |
| 2009 | 137 |
| 2010 | 156 |
| 2011 | 140 |
| 2012 | 135 |
| 2013 | 139 |
| 2014 | 133 |
| 2015 | 128 |
| 2016 | 158 |
| 2017 | 152 |
| 2018 | 140 |
| 2019 | 151 |
| 2020 | 182 |
| 2021 | 310 |
| 2022 | 126 |
| 2025 | 0 |