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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1964 | 1 |
| 1965 | 3 |
| 1966 | 24 |
| 1967 | 33 |
| 1968 | 34 |
| 1969 | 36 |
| 1970 | 38 |
| 1971 | 62 |
| 1972 | 44 |
| 1973 | 37 |
| 1974 | 50 |
| 1975 | 48 |
| 1976 | 45 |
| 1977 | 43 |
| 1978 | 24 |
| 1979 | 46 |
| 1980 | 77 |
| 1981 | 74 |
| 1982 | 82 |
| 1983 | 89 |
| 1984 | 78 |
| 1985 | 94 |
| 1986 | 144 |
| 1987 | 140 |
| 1988 | 153 |
| 1989 | 123 |
| 1990 | 140 |
| 1991 | 136 |
| 1992 | 166 |
| 1993 | 154 |
| 1994 | 194 |
| 1995 | 229 |
| 1996 | 203 |
| 1997 | 177 |
| 1998 | 189 |
| 1999 | 160 |
| 2000 | 149 |
| 2001 | 145 |
| 2002 | 190 |
| 2003 | 242 |
| 2004 | 281 |
| 2005 | 375 |
| 2006 | 361 |
| 2007 | 307 |
| 2008 | 274 |
| 2009 | 242 |
| 2010 | 220 |
| 2011 | 199 |
| 2012 | 209 |
| 2013 | 224 |
| 2014 | 173 |
| 2015 | 151 |
| 2016 | 106 |
| 2017 | 113 |
| 2018 | 113 |
| 2019 | 125 |
| 2020 | 120 |
| 2021 | 94 |
| 2022 | 32 |
| 2023 | 29 |
| 2024 | 11 |