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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 2 |
| 1953 | 1 |
| 1954 | 1 |
| 1955 | 3 |
| 1956 | 5 |
| 1958 | 4 |
| 1959 | 4 |
| 1966 | 2 |
| 1968 | 1 |
| 1969 | 1 |
| 1970 | 11 |
| 1971 | 26 |
| 1972 | 62 |
| 1973 | 64 |
| 1974 | 55 |
| 1975 | 61 |
| 1976 | 63 |
| 1977 | 94 |
| 1978 | 79 |
| 1979 | 71 |
| 1980 | 59 |
| 1981 | 65 |
| 1982 | 69 |
| 1983 | 68 |
| 1984 | 66 |
| 1985 | 70 |
| 1986 | 86 |
| 1987 | 74 |
| 1988 | 131 |
| 1989 | 161 |
| 1990 | 110 |
| 1991 | 73 |
| 1992 | 70 |
| 1993 | 95 |
| 1994 | 91 |
| 1995 | 114 |
| 1996 | 124 |
| 1997 | 109 |
| 1998 | 134 |
| 1999 | 169 |
| 2000 | 210 |
| 2001 | 207 |
| 2002 | 199 |
| 2003 | 168 |
| 2004 | 174 |
| 2005 | 239 |
| 2006 | 249 |
| 2007 | 235 |
| 2008 | 207 |
| 2009 | 211 |
| 2010 | 245 |
| 2011 | 252 |
| 2012 | 232 |
| 2013 | 234 |
| 2014 | 214 |
| 2015 | 238 |
| 2016 | 196 |
| 2017 | 196 |
| 2018 | 192 |
| 2019 | 168 |
| 2020 | 121 |
| 2021 | 82 |
| 2022 | 37 |
| 2023 | 13 |
| 2024 | 12 |