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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1840 | 1 |
| 1846 | 1 |
| 1847 | 1 |
| 1860 | 1 |
| 1873 | 1 |
| 1882 | 1 |
| 1884 | 1 |
| 1885 | 1 |
| 1888 | 1 |
| 1890 | 1 |
| 1891 | 3 |
| 1893 | 1 |
| 1907 | 1 |
| 1910 | 1 |
| 1922 | 1 |
| 1930 | 1 |
| 1931 | 1 |
| 1932 | 1 |
| 1935 | 3 |
| 1946 | 1 |
| 1947 | 5 |
| 1948 | 10 |
| 1949 | 23 |
| 1950 | 69 |
| 1951 | 79 |
| 1952 | 99 |
| 1953 | 78 |
| 1954 | 77 |
| 1955 | 107 |
| 1956 | 72 |
| 1957 | 84 |
| 1958 | 92 |
| 1959 | 76 |
| 1960 | 79 |
| 1961 | 70 |
| 1962 | 51 |
| 1963 | 56 |
| 1964 | 61 |
| 1965 | 49 |
| 1966 | 21 |
| 1967 | 21 |
| 1968 | 14 |
| 1969 | 12 |
| 1970 | 20 |
| 1971 | 76 |
| 1972 | 74 |
| 1973 | 77 |
| 1974 | 129 |
| 1975 | 109 |
| 1976 | 113 |
| 1977 | 119 |
| 1978 | 136 |
| 1979 | 129 |
| 1980 | 138 |
| 1981 | 127 |
| 1982 | 137 |
| 1983 | 156 |
| 1984 | 132 |
| 1985 | 154 |
| 1986 | 165 |
| 1987 | 457 |
| 1988 | 799 |
| 1989 | 875 |
| 1990 | 886 |
| 1991 | 928 |
| 1992 | 924 |
| 1993 | 1085 |
| 1994 | 1141 |
| 1995 | 1160 |
| 1996 | 1250 |
| 1997 | 1338 |
| 1998 | 1427 |
| 1999 | 1499 |
| 2000 | 1612 |
| 2001 | 1716 |
| 2002 | 1639 |
| 2003 | 1969 |
| 2004 | 2155 |
| 2005 | 2151 |
| 2006 | 2438 |
| 2007 | 2668 |
| 2008 | 2870 |
| 2009 | 3008 |
| 2010 | 3133 |
| 2011 | 3240 |
| 2012 | 3701 |
| 2013 | 4464 |
| 2014 | 6492 |
| 2015 | 8129 |
| 2016 | 9550 |
| 2017 | 10195 |
| 2018 | 11008 |
| 2019 | 11788 |
| 2020 | 15777 |
| 2021 | 17124 |
| 2022 | 16563 |
| 2023 | 15720 |
| 2024 | 5695 |