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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1872 | 1 |
| 1874 | 2 |
| 1875 | 1 |
| 1876 | 1 |
| 1878 | 1 |
| 1881 | 6 |
| 1882 | 2 |
| 1884 | 2 |
| 1885 | 1 |
| 1897 | 1 |
| 1913 | 1 |
| 1930 | 1 |
| 1933 | 1 |
| 1940 | 1 |
| 1943 | 1 |
| 1944 | 2 |
| 1946 | 3 |
| 1947 | 4 |
| 1948 | 6 |
| 1949 | 6 |
| 1950 | 7 |
| 1951 | 6 |
| 1952 | 3 |
| 1953 | 9 |
| 1954 | 10 |
| 1955 | 17 |
| 1956 | 14 |
| 1957 | 16 |
| 1958 | 7 |
| 1959 | 18 |
| 1960 | 13 |
| 1961 | 17 |
| 1962 | 24 |
| 1963 | 24 |
| 1964 | 33 |
| 1965 | 29 |
| 1966 | 33 |
| 1967 | 37 |
| 1968 | 34 |
| 1969 | 44 |
| 1970 | 33 |
| 1971 | 36 |
| 1972 | 50 |
| 1973 | 45 |
| 1974 | 44 |
| 1975 | 40 |
| 1976 | 47 |
| 1977 | 39 |
| 1978 | 50 |
| 1979 | 44 |
| 1980 | 47 |
| 1981 | 55 |
| 1982 | 67 |
| 1983 | 71 |
| 1984 | 62 |
| 1985 | 81 |
| 1986 | 80 |
| 1987 | 104 |
| 1988 | 107 |
| 1989 | 111 |
| 1990 | 130 |
| 1991 | 130 |
| 1992 | 128 |
| 1993 | 106 |
| 1994 | 143 |
| 1995 | 123 |
| 1996 | 143 |
| 1997 | 150 |
| 1998 | 127 |
| 1999 | 141 |
| 2000 | 154 |
| 2001 | 153 |
| 2002 | 155 |
| 2003 | 175 |
| 2004 | 176 |
| 2005 | 195 |
| 2006 | 201 |
| 2007 | 210 |
| 2008 | 224 |
| 2009 | 234 |
| 2010 | 256 |
| 2011 | 271 |
| 2012 | 280 |
| 2013 | 287 |
| 2014 | 301 |
| 2015 | 349 |
| 2016 | 378 |
| 2017 | 351 |
| 2018 | 376 |
| 2019 | 342 |
| 2020 | 333 |
| 2021 | 371 |
| 2022 | 310 |