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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1948 | 1 |
| 1953 | 7 |
| 1954 | 6 |
| 1955 | 6 |
| 1956 | 11 |
| 1957 | 7 |
| 1958 | 3 |
| 1959 | 7 |
| 1960 | 5 |
| 1961 | 7 |
| 1962 | 7 |
| 1964 | 3 |
| 1965 | 20 |
| 1966 | 25 |
| 1967 | 36 |
| 1968 | 31 |
| 1969 | 31 |
| 1970 | 25 |
| 1971 | 23 |
| 1972 | 50 |
| 1973 | 46 |
| 1974 | 34 |
| 1975 | 61 |
| 1976 | 31 |
| 1977 | 41 |
| 1978 | 40 |
| 1979 | 50 |
| 1980 | 51 |
| 1981 | 55 |
| 1982 | 61 |
| 1983 | 60 |
| 1984 | 69 |
| 1985 | 62 |
| 1986 | 69 |
| 1987 | 102 |
| 1988 | 64 |
| 1989 | 95 |
| 1990 | 84 |
| 1991 | 94 |
| 1992 | 73 |
| 1993 | 74 |
| 1994 | 90 |
| 1995 | 100 |
| 1996 | 91 |
| 1997 | 112 |
| 1998 | 85 |
| 1999 | 77 |
| 2000 | 69 |
| 2001 | 125 |
| 2002 | 109 |
| 2003 | 139 |
| 2004 | 123 |
| 2005 | 122 |
| 2006 | 113 |
| 2007 | 146 |
| 2008 | 146 |
| 2009 | 141 |
| 2010 | 189 |
| 2011 | 201 |
| 2012 | 207 |
| 2013 | 254 |
| 2014 | 292 |
| 2015 | 268 |
| 2016 | 234 |
| 2017 | 195 |
| 2018 | 168 |
| 2019 | 132 |
| 2020 | 112 |
| 2021 | 83 |
| 2022 | 28 |
| 2023 | 27 |
| 2024 | 14 |