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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1961 | 1 |
| 1962 | 2 |
| 1963 | 1 |
| 1964 | 2 |
| 1965 | 1 |
| 1966 | 3 |
| 1967 | 3 |
| 1968 | 4 |
| 1970 | 4 |
| 1971 | 7 |
| 1972 | 2 |
| 1973 | 2 |
| 1974 | 3 |
| 1975 | 2 |
| 1976 | 2 |
| 1977 | 10 |
| 1978 | 10 |
| 1979 | 7 |
| 1980 | 11 |
| 1981 | 15 |
| 1982 | 18 |
| 1983 | 23 |
| 1984 | 29 |
| 1985 | 23 |
| 1986 | 29 |
| 1987 | 44 |
| 1988 | 50 |
| 1989 | 47 |
| 1990 | 43 |
| 1991 | 52 |
| 1992 | 56 |
| 1993 | 75 |
| 1994 | 69 |
| 1995 | 75 |
| 1996 | 96 |
| 1997 | 126 |
| 1998 | 147 |
| 1999 | 225 |
| 2000 | 275 |
| 2001 | 281 |
| 2002 | 335 |
| 2003 | 357 |
| 2004 | 439 |
| 2005 | 482 |
| 2006 | 563 |
| 2007 | 648 |
| 2008 | 713 |
| 2009 | 828 |
| 2010 | 985 |
| 2011 | 1252 |
| 2012 | 1363 |
| 2013 | 1411 |
| 2014 | 1490 |
| 2015 | 1612 |
| 2016 | 1502 |
| 2017 | 1593 |
| 2018 | 1604 |
| 2019 | 1676 |
| 2020 | 1910 |
| 2021 | 1997 |
| 2022 | 1761 |
| 2023 | 492 |