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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1959 | 5 |
| 1960 | 8 |
| 1961 | 7 |
| 1962 | 2 |
| 1964 | 4 |
| 1965 | 26 |
| 1966 | 26 |
| 1967 | 24 |
| 1968 | 30 |
| 1969 | 30 |
| 1970 | 39 |
| 1971 | 38 |
| 1972 | 23 |
| 1973 | 27 |
| 1974 | 11 |
| 1975 | 22 |
| 1976 | 35 |
| 1977 | 29 |
| 1978 | 47 |
| 1979 | 54 |
| 1980 | 75 |
| 1981 | 64 |
| 1982 | 46 |
| 1983 | 64 |
| 1984 | 55 |
| 1985 | 50 |
| 1986 | 53 |
| 1987 | 62 |
| 1988 | 75 |
| 1989 | 89 |
| 1990 | 71 |
| 1991 | 98 |
| 1992 | 108 |
| 1993 | 103 |
| 1994 | 99 |
| 1995 | 72 |
| 1996 | 79 |
| 1997 | 80 |
| 1998 | 91 |
| 1999 | 94 |
| 2000 | 100 |
| 2001 | 142 |
| 2002 | 133 |
| 2003 | 135 |
| 2004 | 140 |
| 2005 | 175 |
| 2006 | 179 |
| 2007 | 178 |
| 2008 | 198 |
| 2009 | 226 |
| 2010 | 240 |
| 2011 | 273 |
| 2012 | 320 |
| 2013 | 367 |
| 2014 | 408 |
| 2015 | 393 |
| 2016 | 390 |
| 2017 | 407 |
| 2018 | 421 |
| 2019 | 408 |
| 2020 | 385 |
| 2021 | 308 |
| 2022 | 117 |
| 2023 | 51 |
| 2024 | 61 |