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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 4 |
| 1949 | 2 |
| 1951 | 2 |
| 1952 | 9 |
| 1953 | 4 |
| 1954 | 5 |
| 1955 | 5 |
| 1956 | 6 |
| 1957 | 2 |
| 1958 | 1 |
| 1959 | 8 |
| 1960 | 8 |
| 1961 | 7 |
| 1962 | 11 |
| 1963 | 4 |
| 1964 | 9 |
| 1965 | 8 |
| 1967 | 3 |
| 1968 | 2 |
| 1969 | 1 |
| 1970 | 1 |
| 1971 | 6 |
| 1972 | 66 |
| 1973 | 174 |
| 1974 | 174 |
| 1975 | 152 |
| 1976 | 184 |
| 1977 | 174 |
| 1978 | 176 |
| 1979 | 176 |
| 1980 | 159 |
| 1981 | 180 |
| 1982 | 189 |
| 1983 | 199 |
| 1984 | 157 |
| 1985 | 180 |
| 1986 | 175 |
| 1987 | 194 |
| 1988 | 218 |
| 1989 | 214 |
| 1990 | 232 |
| 1991 | 226 |
| 1992 | 222 |
| 1993 | 207 |
| 1994 | 234 |
| 1995 | 219 |
| 1996 | 176 |
| 1997 | 226 |
| 1998 | 214 |
| 1999 | 190 |
| 2000 | 202 |
| 2001 | 187 |
| 2002 | 182 |
| 2003 | 203 |
| 2004 | 194 |
| 2005 | 201 |
| 2006 | 191 |
| 2007 | 198 |
| 2008 | 187 |
| 2009 | 188 |
| 2010 | 181 |
| 2011 | 194 |
| 2012 | 179 |
| 2013 | 168 |
| 2014 | 146 |
| 2015 | 127 |
| 2016 | 116 |
| 2017 | 101 |
| 2018 | 99 |
| 2019 | 93 |
| 2020 | 76 |
| 2021 | 68 |
| 2022 | 40 |
| 2023 | 25 |
| 2024 | 15 |