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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 1 |
| 1950 | 1 |
| 1956 | 2 |
| 1957 | 1 |
| 1958 | 1 |
| 1959 | 2 |
| 1960 | 3 |
| 1961 | 3 |
| 1962 | 3 |
| 1963 | 3 |
| 1964 | 42 |
| 1965 | 80 |
| 1966 | 112 |
| 1967 | 143 |
| 1968 | 229 |
| 1969 | 237 |
| 1970 | 245 |
| 1971 | 265 |
| 1972 | 182 |
| 1973 | 159 |
| 1974 | 184 |
| 1975 | 121 |
| 1976 | 111 |
| 1977 | 90 |
| 1978 | 74 |
| 1979 | 75 |
| 1980 | 161 |
| 1981 | 261 |
| 1982 | 173 |
| 1983 | 154 |
| 1984 | 121 |
| 1985 | 163 |
| 1986 | 223 |
| 1987 | 199 |
| 1988 | 201 |
| 1989 | 266 |
| 1990 | 330 |
| 1991 | 249 |
| 1992 | 142 |
| 1993 | 115 |
| 1994 | 146 |
| 1995 | 186 |
| 1996 | 123 |
| 1997 | 100 |
| 1998 | 68 |
| 1999 | 56 |
| 2000 | 58 |
| 2001 | 31 |
| 2002 | 31 |
| 2003 | 74 |
| 2004 | 62 |
| 2005 | 60 |
| 2006 | 41 |
| 2007 | 28 |
| 2008 | 24 |
| 2009 | 15 |
| 2010 | 28 |
| 2011 | 31 |
| 2012 | 26 |
| 2013 | 16 |
| 2014 | 23 |
| 2015 | 22 |
| 2016 | 18 |
| 2017 | 18 |
| 2018 | 10 |
| 2019 | 10 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 2 |
| 2024 | 0 |