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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 2 |
| 1948 | 1 |
| 1949 | 1 |
| 1951 | 2 |
| 1952 | 3 |
| 1953 | 1 |
| 1954 | 1 |
| 1955 | 6 |
| 1956 | 3 |
| 1957 | 4 |
| 1958 | 7 |
| 1959 | 7 |
| 1960 | 10 |
| 1961 | 13 |
| 1962 | 9 |
| 1963 | 1 |
| 1964 | 4 |
| 1965 | 18 |
| 1966 | 48 |
| 1967 | 56 |
| 1968 | 98 |
| 1969 | 96 |
| 1970 | 106 |
| 1971 | 114 |
| 1972 | 134 |
| 1973 | 121 |
| 1974 | 137 |
| 1975 | 157 |
| 1976 | 156 |
| 1977 | 137 |
| 1978 | 170 |
| 1979 | 225 |
| 1980 | 161 |
| 1981 | 161 |
| 1982 | 165 |
| 1983 | 160 |
| 1984 | 191 |
| 1985 | 191 |
| 1986 | 191 |
| 1987 | 169 |
| 1988 | 205 |
| 1989 | 225 |
| 1990 | 237 |
| 1991 | 206 |
| 1992 | 204 |
| 1993 | 190 |
| 1994 | 210 |
| 1995 | 198 |
| 1996 | 194 |
| 1997 | 179 |
| 1998 | 163 |
| 1999 | 171 |
| 2000 | 144 |
| 2001 | 156 |
| 2002 | 145 |
| 2003 | 141 |
| 2004 | 107 |
| 2005 | 120 |
| 2006 | 146 |
| 2007 | 130 |
| 2008 | 105 |
| 2009 | 89 |
| 2010 | 85 |
| 2011 | 83 |
| 2012 | 73 |
| 2013 | 71 |
| 2014 | 69 |
| 2015 | 67 |
| 2016 | 54 |
| 2017 | 45 |
| 2018 | 50 |
| 2019 | 42 |
| 2020 | 42 |
| 2021 | 33 |
| 2022 | 38 |
| 2023 | 32 |
| 2024 | 15 |