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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 1 |
| 1969 | 1 |
| 1970 | 6 |
| 1971 | 6 |
| 1972 | 2 |
| 1973 | 3 |
| 1974 | 9 |
| 1975 | 2 |
| 1976 | 7 |
| 1977 | 15 |
| 1978 | 12 |
| 1979 | 5 |
| 1980 | 10 |
| 1981 | 12 |
| 1982 | 12 |
| 1983 | 20 |
| 1984 | 13 |
| 1985 | 32 |
| 1986 | 35 |
| 1987 | 36 |
| 1988 | 33 |
| 1989 | 44 |
| 1990 | 53 |
| 1991 | 61 |
| 1992 | 52 |
| 1993 | 46 |
| 1994 | 47 |
| 1995 | 49 |
| 1996 | 56 |
| 1997 | 50 |
| 1998 | 59 |
| 1999 | 77 |
| 2000 | 104 |
| 2001 | 110 |
| 2002 | 120 |
| 2003 | 147 |
| 2004 | 154 |
| 2005 | 235 |
| 2006 | 252 |
| 2007 | 311 |
| 2008 | 368 |
| 2009 | 438 |
| 2010 | 518 |
| 2011 | 585 |
| 2012 | 637 |
| 2013 | 681 |
| 2014 | 808 |
| 2015 | 867 |
| 2016 | 828 |
| 2017 | 868 |
| 2018 | 853 |
| 2019 | 1066 |
| 2020 | 1233 |
| 2021 | 1397 |
| 2022 | 1306 |
| 2023 | 6 |