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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1917 | 2 |
| 1918 | 1 |
| 1937 | 1 |
| 1938 | 1 |
| 1939 | 1 |
| 1948 | 4 |
| 1954 | 1 |
| 1956 | 1 |
| 1957 | 2 |
| 1958 | 3 |
| 1959 | 1 |
| 1960 | 1 |
| 1961 | 2 |
| 1962 | 3 |
| 1963 | 3 |
| 1964 | 10 |
| 1965 | 5 |
| 1966 | 2 |
| 1967 | 5 |
| 1968 | 9 |
| 1969 | 4 |
| 1970 | 8 |
| 1971 | 8 |
| 1972 | 11 |
| 1973 | 11 |
| 1974 | 12 |
| 1975 | 15 |
| 1976 | 24 |
| 1977 | 31 |
| 1978 | 26 |
| 1979 | 31 |
| 1980 | 36 |
| 1981 | 28 |
| 1982 | 33 |
| 1983 | 42 |
| 1984 | 38 |
| 1985 | 42 |
| 1986 | 27 |
| 1987 | 35 |
| 1988 | 42 |
| 1989 | 55 |
| 1990 | 54 |
| 1991 | 63 |
| 1992 | 61 |
| 1993 | 41 |
| 1994 | 46 |
| 1995 | 59 |
| 1996 | 73 |
| 1997 | 64 |
| 1998 | 60 |
| 1999 | 66 |
| 2000 | 69 |
| 2001 | 78 |
| 2002 | 73 |
| 2003 | 88 |
| 2004 | 103 |
| 2005 | 129 |
| 2006 | 156 |
| 2007 | 149 |
| 2008 | 186 |
| 2009 | 269 |
| 2010 | 263 |
| 2011 | 358 |
| 2012 | 344 |
| 2013 | 408 |
| 2014 | 512 |
| 2015 | 526 |
| 2016 | 540 |
| 2017 | 679 |
| 2018 | 773 |
| 2019 | 847 |
| 2020 | 1119 |
| 2021 | 1411 |
| 2022 | 1390 |
| 2023 | 15 |