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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1961 | 4 |
| 1962 | 3 |
| 1963 | 8 |
| 1964 | 2 |
| 1965 | 6 |
| 1966 | 1 |
| 1967 | 8 |
| 1968 | 6 |
| 1969 | 8 |
| 1970 | 4 |
| 1971 | 10 |
| 1972 | 6 |
| 1973 | 3 |
| 1974 | 7 |
| 1975 | 7 |
| 1976 | 17 |
| 1977 | 15 |
| 1978 | 6 |
| 1979 | 7 |
| 1980 | 17 |
| 1981 | 11 |
| 1982 | 13 |
| 1983 | 10 |
| 1984 | 18 |
| 1985 | 19 |
| 1986 | 21 |
| 1987 | 30 |
| 1988 | 41 |
| 1989 | 43 |
| 1990 | 28 |
| 1991 | 27 |
| 1992 | 23 |
| 1993 | 35 |
| 1994 | 29 |
| 1995 | 71 |
| 1996 | 71 |
| 1997 | 70 |
| 1998 | 107 |
| 1999 | 145 |
| 2000 | 173 |
| 2001 | 187 |
| 2002 | 220 |
| 2003 | 257 |
| 2004 | 309 |
| 2005 | 398 |
| 2006 | 414 |
| 2007 | 456 |
| 2008 | 541 |
| 2009 | 652 |
| 2010 | 769 |
| 2011 | 897 |
| 2012 | 1074 |
| 2013 | 1180 |
| 2014 | 1205 |
| 2015 | 1370 |
| 2016 | 1418 |
| 2017 | 1571 |
| 2018 | 1648 |
| 2019 | 1814 |
| 2020 | 2022 |
| 2021 | 2292 |
| 2022 | 2343 |
| 2023 | 1118 |