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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1818 | 1 |
| 1821 | 1 |
| 1823 | 1 |
| 1916 | 1 |
| 1939 | 1 |
| 1942 | 1 |
| 1944 | 1 |
| 1945 | 2 |
| 1946 | 7 |
| 1947 | 6 |
| 1948 | 7 |
| 1949 | 6 |
| 1950 | 4 |
| 1951 | 9 |
| 1952 | 15 |
| 1953 | 14 |
| 1954 | 7 |
| 1955 | 16 |
| 1956 | 12 |
| 1957 | 7 |
| 1958 | 9 |
| 1959 | 11 |
| 1960 | 18 |
| 1961 | 13 |
| 1962 | 12 |
| 1963 | 16 |
| 1964 | 15 |
| 1965 | 22 |
| 1966 | 19 |
| 1967 | 32 |
| 1968 | 28 |
| 1969 | 35 |
| 1970 | 31 |
| 1971 | 36 |
| 1972 | 54 |
| 1973 | 40 |
| 1974 | 56 |
| 1975 | 51 |
| 1976 | 43 |
| 1977 | 40 |
| 1978 | 51 |
| 1979 | 38 |
| 1980 | 36 |
| 1981 | 45 |
| 1982 | 44 |
| 1983 | 39 |
| 1984 | 37 |
| 1985 | 52 |
| 1986 | 46 |
| 1987 | 49 |
| 1988 | 61 |
| 1989 | 74 |
| 1990 | 62 |
| 1991 | 59 |
| 1992 | 69 |
| 1993 | 66 |
| 1994 | 67 |
| 1995 | 64 |
| 1996 | 74 |
| 1997 | 67 |
| 1998 | 80 |
| 1999 | 87 |
| 2000 | 95 |
| 2001 | 88 |
| 2002 | 104 |
| 2003 | 92 |
| 2004 | 115 |
| 2005 | 112 |
| 2006 | 116 |
| 2007 | 136 |
| 2008 | 129 |
| 2009 | 120 |
| 2010 | 130 |
| 2011 | 159 |
| 2012 | 166 |
| 2013 | 149 |
| 2014 | 167 |
| 2015 | 194 |
| 2016 | 200 |
| 2017 | 199 |
| 2018 | 209 |
| 2019 | 151 |
| 2020 | 182 |
| 2021 | 200 |
| 2022 | 166 |
| 2023 | 18 |