Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1843 | 1 |
| 1844 | 2 |
| 1847 | 1 |
| 1848 | 2 |
| 1858 | 2 |
| 1916 | 1 |
| 1919 | 1 |
| 1934 | 2 |
| 1936 | 1 |
| 1941 | 4 |
| 1944 | 1 |
| 1945 | 5 |
| 1946 | 4 |
| 1947 | 7 |
| 1948 | 9 |
| 1949 | 10 |
| 1950 | 5 |
| 1951 | 9 |
| 1952 | 7 |
| 1953 | 5 |
| 1954 | 14 |
| 1955 | 14 |
| 1956 | 10 |
| 1957 | 13 |
| 1958 | 10 |
| 1959 | 7 |
| 1960 | 15 |
| 1961 | 24 |
| 1962 | 29 |
| 1963 | 19 |
| 1964 | 13 |
| 1965 | 31 |
| 1966 | 31 |
| 1967 | 36 |
| 1968 | 42 |
| 1969 | 39 |
| 1970 | 55 |
| 1971 | 49 |
| 1972 | 79 |
| 1973 | 80 |
| 1974 | 85 |
| 1975 | 71 |
| 1976 | 69 |
| 1977 | 90 |
| 1978 | 99 |
| 1979 | 88 |
| 1980 | 91 |
| 1981 | 123 |
| 1982 | 139 |
| 1983 | 129 |
| 1984 | 142 |
| 1985 | 165 |
| 1986 | 207 |
| 1987 | 202 |
| 1988 | 233 |
| 1989 | 262 |
| 1990 | 278 |
| 1991 | 301 |
| 1992 | 314 |
| 1993 | 358 |
| 1994 | 425 |
| 1995 | 505 |
| 1996 | 579 |
| 1997 | 590 |
| 1998 | 722 |
| 1999 | 817 |
| 2000 | 1050 |
| 2001 | 1260 |
| 2002 | 1429 |
| 2003 | 1623 |
| 2004 | 1987 |
| 2005 | 2509 |
| 2006 | 2935 |
| 2007 | 3352 |
| 2008 | 3843 |
| 2009 | 4394 |
| 2010 | 5256 |
| 2011 | 6179 |
| 2012 | 6858 |
| 2013 | 7601 |
| 2014 | 8013 |
| 2015 | 8548 |
| 2016 | 8771 |
| 2017 | 8909 |
| 2018 | 9117 |
| 2019 | 9682 |
| 2020 | 10724 |
| 2021 | 7215 |
| 2022 | 1 |