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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1817 | 1 |
| 1859 | 1 |
| 1890 | 1 |
| 1902 | 1 |
| 1966 | 24 |
| 1967 | 16 |
| 1968 | 5 |
| 1970 | 97 |
| 1971 | 79 |
| 1972 | 3 |
| 1973 | 1 |
| 1974 | 3 |
| 1975 | 17 |
| 1976 | 14 |
| 1977 | 15 |
| 1978 | 7 |
| 1979 | 9 |
| 1980 | 2 |
| 1981 | 7 |
| 1982 | 24 |
| 1983 | 12 |
| 1984 | 10 |
| 1985 | 17 |
| 1986 | 27 |
| 1987 | 38 |
| 1988 | 89 |
| 1989 | 5718 |
| 1990 | 10648 |
| 1991 | 11933 |
| 1992 | 14064 |
| 1993 | 15747 |
| 1994 | 15506 |
| 1995 | 16611 |
| 1996 | 15848 |
| 1997 | 17092 |
| 1998 | 17626 |
| 1999 | 18836 |
| 2000 | 19493 |
| 2001 | 19896 |
| 2002 | 22209 |
| 2003 | 25030 |
| 2004 | 25427 |
| 2005 | 27124 |
| 2006 | 29623 |
| 2007 | 30436 |
| 2008 | 32020 |
| 2009 | 32795 |
| 2010 | 35188 |
| 2011 | 38343 |
| 2012 | 39000 |
| 2013 | 49133 |
| 2014 | 48945 |
| 2015 | 50598 |
| 2016 | 48506 |
| 2017 | 52693 |
| 2018 | 54072 |
| 2019 | 55805 |
| 2020 | 62249 |
| 2021 | 57832 |
| 2022 | 49683 |
| 2023 | 38013 |
| 2024 | 6865 |