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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1956 | 1 |
| 1958 | 1 |
| 1959 | 2 |
| 1962 | 4 |
| 1963 | 2 |
| 1966 | 2 |
| 1967 | 2 |
| 1968 | 2 |
| 1969 | 2 |
| 1970 | 3 |
| 1971 | 4 |
| 1972 | 4 |
| 1973 | 7 |
| 1974 | 5 |
| 1975 | 4 |
| 1976 | 6 |
| 1977 | 3 |
| 1978 | 8 |
| 1979 | 8 |
| 1980 | 6 |
| 1981 | 13 |
| 1982 | 12 |
| 1983 | 8 |
| 1984 | 16 |
| 1985 | 20 |
| 1986 | 19 |
| 1987 | 32 |
| 1988 | 14 |
| 1989 | 37 |
| 1990 | 31 |
| 1991 | 33 |
| 1992 | 27 |
| 1993 | 49 |
| 1994 | 48 |
| 1995 | 49 |
| 1996 | 66 |
| 1997 | 57 |
| 1998 | 79 |
| 1999 | 106 |
| 2000 | 132 |
| 2001 | 154 |
| 2002 | 186 |
| 2003 | 204 |
| 2004 | 236 |
| 2005 | 290 |
| 2006 | 309 |
| 2007 | 327 |
| 2008 | 361 |
| 2009 | 374 |
| 2010 | 474 |
| 2011 | 531 |
| 2012 | 622 |
| 2013 | 634 |
| 2014 | 708 |
| 2015 | 744 |
| 2016 | 714 |
| 2017 | 720 |
| 2018 | 769 |
| 2019 | 753 |
| 2020 | 802 |
| 2021 | 852 |
| 2022 | 738 |
| 2023 | 47 |