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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 1 |
| 1956 | 3 |
| 1957 | 6 |
| 1958 | 5 |
| 1959 | 3 |
| 1960 | 4 |
| 1961 | 3 |
| 1962 | 4 |
| 1964 | 3 |
| 1965 | 21 |
| 1966 | 23 |
| 1967 | 34 |
| 1968 | 46 |
| 1969 | 52 |
| 1970 | 54 |
| 1971 | 59 |
| 1972 | 79 |
| 1973 | 78 |
| 1974 | 100 |
| 1975 | 74 |
| 1976 | 104 |
| 1977 | 72 |
| 1978 | 97 |
| 1979 | 61 |
| 1980 | 94 |
| 1981 | 93 |
| 1982 | 124 |
| 1983 | 91 |
| 1984 | 110 |
| 1985 | 115 |
| 1986 | 97 |
| 1987 | 118 |
| 1988 | 121 |
| 1989 | 127 |
| 1990 | 197 |
| 1991 | 123 |
| 1992 | 165 |
| 1993 | 131 |
| 1994 | 178 |
| 1995 | 162 |
| 1996 | 189 |
| 1997 | 194 |
| 1998 | 226 |
| 1999 | 210 |
| 2000 | 245 |
| 2001 | 220 |
| 2002 | 230 |
| 2003 | 191 |
| 2004 | 218 |
| 2005 | 209 |
| 2006 | 200 |
| 2007 | 290 |
| 2008 | 261 |
| 2009 | 259 |
| 2010 | 276 |
| 2011 | 266 |
| 2012 | 293 |
| 2013 | 299 |
| 2014 | 264 |
| 2015 | 296 |
| 2016 | 269 |
| 2017 | 236 |
| 2018 | 288 |
| 2019 | 267 |
| 2020 | 282 |
| 2021 | 226 |
| 2022 | 103 |
| 2023 | 99 |
| 2024 | 81 |