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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 3 |
| 1954 | 2 |
| 1955 | 9 |
| 1956 | 16 |
| 1957 | 15 |
| 1958 | 12 |
| 1959 | 6 |
| 1960 | 7 |
| 1961 | 3 |
| 1962 | 1 |
| 1964 | 1 |
| 1965 | 12 |
| 1966 | 20 |
| 1967 | 19 |
| 1968 | 29 |
| 1969 | 32 |
| 1970 | 39 |
| 1971 | 38 |
| 1972 | 48 |
| 1973 | 33 |
| 1974 | 38 |
| 1975 | 43 |
| 1976 | 53 |
| 1977 | 46 |
| 1978 | 59 |
| 1979 | 81 |
| 1980 | 148 |
| 1981 | 129 |
| 1982 | 131 |
| 1983 | 179 |
| 1984 | 188 |
| 1985 | 164 |
| 1986 | 156 |
| 1987 | 124 |
| 1988 | 131 |
| 1989 | 100 |
| 1990 | 168 |
| 1991 | 172 |
| 1992 | 138 |
| 1993 | 132 |
| 1994 | 196 |
| 1995 | 214 |
| 1996 | 285 |
| 1997 | 215 |
| 1998 | 167 |
| 1999 | 286 |
| 2000 | 254 |
| 2001 | 248 |
| 2002 | 171 |
| 2003 | 149 |
| 2004 | 167 |
| 2005 | 181 |
| 2006 | 152 |
| 2007 | 134 |
| 2008 | 133 |
| 2009 | 123 |
| 2010 | 163 |
| 2011 | 170 |
| 2012 | 131 |
| 2013 | 106 |
| 2014 | 95 |
| 2015 | 95 |
| 2016 | 92 |
| 2017 | 62 |
| 2018 | 61 |
| 2019 | 59 |
| 2020 | 62 |
| 2021 | 41 |
| 2022 | 48 |
| 2023 | 29 |
| 2024 | 7 |