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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 11 |
| 1953 | 7 |
| 1954 | 8 |
| 1955 | 9 |
| 1956 | 37 |
| 1957 | 60 |
| 1958 | 80 |
| 1959 | 86 |
| 1960 | 119 |
| 1961 | 112 |
| 1962 | 93 |
| 1967 | 10 |
| 1968 | 9 |
| 1969 | 17 |
| 1970 | 19 |
| 1971 | 16 |
| 1972 | 26 |
| 1973 | 16 |
| 1974 | 32 |
| 1975 | 61 |
| 1976 | 36 |
| 1977 | 57 |
| 1978 | 52 |
| 1979 | 45 |
| 1980 | 57 |
| 1981 | 102 |
| 1982 | 101 |
| 1983 | 112 |
| 1984 | 120 |
| 1985 | 166 |
| 1986 | 141 |
| 1987 | 137 |
| 1988 | 186 |
| 1989 | 185 |
| 1990 | 171 |
| 1991 | 174 |
| 1992 | 101 |
| 1993 | 54 |
| 1994 | 70 |
| 1995 | 47 |
| 1996 | 49 |
| 1997 | 55 |
| 1998 | 55 |
| 1999 | 52 |
| 2000 | 57 |
| 2001 | 65 |
| 2002 | 66 |
| 2003 | 65 |
| 2004 | 74 |
| 2005 | 69 |
| 2006 | 68 |
| 2007 | 60 |
| 2008 | 79 |
| 2009 | 64 |
| 2010 | 69 |
| 2011 | 58 |
| 2012 | 62 |
| 2013 | 67 |
| 2014 | 67 |
| 2015 | 53 |
| 2016 | 49 |
| 2017 | 68 |
| 2018 | 57 |
| 2019 | 49 |
| 2020 | 36 |
| 2021 | 27 |
| 2022 | 6 |
| 2023 | 1 |
| 2024 | 1 |