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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1878 | 3 |
| 1879 | 1 |
| 1881 | 1 |
| 1908 | 1 |
| 1910 | 1 |
| 1932 | 1 |
| 1933 | 2 |
| 1934 | 1 |
| 1936 | 1 |
| 1937 | 2 |
| 1943 | 1 |
| 1946 | 5 |
| 1947 | 3 |
| 1948 | 6 |
| 1949 | 12 |
| 1950 | 8 |
| 1951 | 9 |
| 1952 | 3 |
| 1953 | 7 |
| 1954 | 12 |
| 1955 | 15 |
| 1956 | 13 |
| 1957 | 12 |
| 1958 | 11 |
| 1959 | 11 |
| 1960 | 4 |
| 1961 | 6 |
| 1962 | 6 |
| 1963 | 11 |
| 1964 | 9 |
| 1965 | 10 |
| 1966 | 9 |
| 1967 | 12 |
| 1968 | 18 |
| 1969 | 14 |
| 1970 | 17 |
| 1971 | 24 |
| 1972 | 18 |
| 1973 | 27 |
| 1974 | 37 |
| 1975 | 50 |
| 1976 | 32 |
| 1977 | 57 |
| 1978 | 44 |
| 1979 | 51 |
| 1980 | 50 |
| 1981 | 55 |
| 1982 | 65 |
| 1983 | 58 |
| 1984 | 68 |
| 1985 | 59 |
| 1986 | 59 |
| 1987 | 59 |
| 1988 | 85 |
| 1989 | 79 |
| 1990 | 81 |
| 1991 | 101 |
| 1992 | 99 |
| 1993 | 111 |
| 1994 | 119 |
| 1995 | 132 |
| 1996 | 116 |
| 1997 | 135 |
| 1998 | 136 |
| 1999 | 128 |
| 2000 | 163 |
| 2001 | 156 |
| 2002 | 146 |
| 2003 | 205 |
| 2004 | 177 |
| 2005 | 220 |
| 2006 | 246 |
| 2007 | 273 |
| 2008 | 288 |
| 2009 | 319 |
| 2010 | 351 |
| 2011 | 383 |
| 2012 | 426 |
| 2013 | 447 |
| 2014 | 530 |
| 2015 | 538 |
| 2016 | 563 |
| 2017 | 563 |
| 2018 | 571 |
| 2019 | 603 |
| 2020 | 641 |
| 2021 | 742 |
| 2022 | 684 |
| 2023 | 455 |