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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1951 | 1 |
| 1952 | 8 |
| 1953 | 5 |
| 1955 | 2 |
| 1956 | 2 |
| 1957 | 1 |
| 1958 | 2 |
| 1963 | 4 |
| 1964 | 7 |
| 1965 | 46 |
| 1966 | 95 |
| 1967 | 111 |
| 1968 | 84 |
| 1969 | 89 |
| 1970 | 78 |
| 1971 | 42 |
| 1972 | 59 |
| 1973 | 48 |
| 1974 | 50 |
| 1975 | 55 |
| 1976 | 59 |
| 1977 | 68 |
| 1978 | 65 |
| 1979 | 79 |
| 1980 | 103 |
| 1981 | 105 |
| 1982 | 125 |
| 1983 | 109 |
| 1984 | 131 |
| 1985 | 118 |
| 1986 | 103 |
| 1987 | 128 |
| 1988 | 144 |
| 1989 | 128 |
| 1990 | 170 |
| 1991 | 153 |
| 1992 | 154 |
| 1993 | 159 |
| 1994 | 145 |
| 1995 | 168 |
| 1996 | 154 |
| 1997 | 152 |
| 1998 | 149 |
| 1999 | 157 |
| 2000 | 183 |
| 2001 | 165 |
| 2002 | 128 |
| 2003 | 147 |
| 2004 | 122 |
| 2005 | 148 |
| 2006 | 118 |
| 2007 | 143 |
| 2008 | 165 |
| 2009 | 196 |
| 2010 | 160 |
| 2011 | 184 |
| 2012 | 147 |
| 2013 | 150 |
| 2014 | 146 |
| 2015 | 181 |
| 2016 | 147 |
| 2017 | 133 |
| 2018 | 128 |
| 2019 | 105 |
| 2020 | 107 |
| 2021 | 83 |
| 2022 | 18 |
| 2023 | 5 |
| 2024 | 14 |