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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1962 | 1 |
| 1963 | 2 |
| 1964 | 1 |
| 1965 | 1 |
| 1968 | 1 |
| 1969 | 1 |
| 1970 | 2 |
| 1971 | 1 |
| 1972 | 2 |
| 1974 | 1 |
| 1975 | 5 |
| 1976 | 3 |
| 1978 | 3 |
| 1979 | 2 |
| 1980 | 4 |
| 1981 | 10 |
| 1982 | 2 |
| 1983 | 3 |
| 1984 | 9 |
| 1985 | 9 |
| 1986 | 13 |
| 1987 | 8 |
| 1988 | 18 |
| 1989 | 24 |
| 1990 | 29 |
| 1991 | 16 |
| 1992 | 20 |
| 1993 | 18 |
| 1994 | 23 |
| 1995 | 36 |
| 1996 | 42 |
| 1997 | 30 |
| 1998 | 42 |
| 1999 | 67 |
| 2000 | 77 |
| 2001 | 89 |
| 2002 | 96 |
| 2003 | 142 |
| 2004 | 171 |
| 2005 | 195 |
| 2006 | 191 |
| 2007 | 203 |
| 2008 | 249 |
| 2009 | 251 |
| 2010 | 301 |
| 2011 | 360 |
| 2012 | 417 |
| 2013 | 446 |
| 2014 | 464 |
| 2015 | 526 |
| 2016 | 460 |
| 2017 | 463 |
| 2018 | 456 |
| 2019 | 410 |
| 2020 | 447 |
| 2021 | 454 |
| 2022 | 448 |
| 2023 | 174 |