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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1861 | 1 |
| 1876 | 1 |
| 1899 | 1 |
| 1922 | 1 |
| 1932 | 1 |
| 1933 | 1 |
| 1934 | 1 |
| 1939 | 1 |
| 1942 | 2 |
| 1943 | 1 |
| 1944 | 1 |
| 1945 | 3 |
| 1946 | 2 |
| 1947 | 2 |
| 1948 | 4 |
| 1949 | 2 |
| 1950 | 5 |
| 1951 | 7 |
| 1952 | 7 |
| 1953 | 5 |
| 1954 | 5 |
| 1955 | 12 |
| 1956 | 8 |
| 1957 | 4 |
| 1958 | 4 |
| 1959 | 7 |
| 1960 | 8 |
| 1961 | 6 |
| 1962 | 8 |
| 1963 | 5 |
| 1964 | 20 |
| 1965 | 11 |
| 1966 | 20 |
| 1967 | 28 |
| 1968 | 28 |
| 1969 | 14 |
| 1970 | 32 |
| 1971 | 31 |
| 1972 | 29 |
| 1973 | 32 |
| 1974 | 26 |
| 1975 | 38 |
| 1976 | 45 |
| 1977 | 36 |
| 1978 | 36 |
| 1979 | 37 |
| 1980 | 37 |
| 1981 | 46 |
| 1982 | 38 |
| 1983 | 42 |
| 1984 | 37 |
| 1985 | 32 |
| 1986 | 45 |
| 1987 | 55 |
| 1988 | 49 |
| 1989 | 41 |
| 1990 | 45 |
| 1991 | 61 |
| 1992 | 65 |
| 1993 | 53 |
| 1994 | 55 |
| 1995 | 44 |
| 1996 | 47 |
| 1997 | 54 |
| 1998 | 44 |
| 1999 | 47 |
| 2000 | 64 |
| 2001 | 78 |
| 2002 | 68 |
| 2003 | 93 |
| 2004 | 88 |
| 2005 | 103 |
| 2006 | 119 |
| 2007 | 111 |
| 2008 | 138 |
| 2009 | 150 |
| 2010 | 126 |
| 2011 | 123 |
| 2012 | 144 |
| 2013 | 119 |
| 2014 | 123 |
| 2015 | 114 |
| 2016 | 111 |
| 2017 | 121 |
| 2018 | 104 |
| 2019 | 124 |
| 2020 | 130 |
| 2021 | 152 |
| 2022 | 131 |
| 2023 | 44 |