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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 1 |
| 1953 | 1 |
| 1954 | 1 |
| 1956 | 4 |
| 1957 | 2 |
| 1958 | 3 |
| 1959 | 2 |
| 1960 | 6 |
| 1961 | 8 |
| 1962 | 4 |
| 1966 | 24 |
| 1967 | 56 |
| 1968 | 75 |
| 1969 | 113 |
| 1970 | 115 |
| 1971 | 130 |
| 1972 | 98 |
| 1973 | 133 |
| 1974 | 119 |
| 1975 | 97 |
| 1976 | 71 |
| 1977 | 86 |
| 1978 | 70 |
| 1979 | 57 |
| 1980 | 64 |
| 1981 | 60 |
| 1982 | 51 |
| 1983 | 58 |
| 1984 | 54 |
| 1985 | 62 |
| 1986 | 54 |
| 1987 | 47 |
| 1988 | 47 |
| 1989 | 60 |
| 1990 | 48 |
| 1991 | 43 |
| 1992 | 70 |
| 1993 | 66 |
| 1994 | 65 |
| 1995 | 70 |
| 1996 | 90 |
| 1997 | 104 |
| 1998 | 98 |
| 1999 | 129 |
| 2000 | 171 |
| 2001 | 195 |
| 2002 | 206 |
| 2003 | 224 |
| 2004 | 217 |
| 2005 | 246 |
| 2006 | 241 |
| 2007 | 263 |
| 2008 | 262 |
| 2009 | 217 |
| 2010 | 234 |
| 2011 | 236 |
| 2012 | 229 |
| 2013 | 251 |
| 2014 | 230 |
| 2015 | 261 |
| 2016 | 199 |
| 2017 | 191 |
| 2018 | 180 |
| 2019 | 193 |
| 2020 | 156 |
| 2021 | 80 |
| 2022 | 13 |
| 2023 | 6 |
| 2024 | 5 |