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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1962 | 1 |
| 1967 | 1 |
| 1971 | 3 |
| 1972 | 10 |
| 1973 | 25 |
| 1974 | 25 |
| 1975 | 30 |
| 1976 | 22 |
| 1977 | 25 |
| 1978 | 33 |
| 1979 | 51 |
| 1980 | 56 |
| 1981 | 63 |
| 1982 | 77 |
| 1983 | 85 |
| 1984 | 121 |
| 1985 | 151 |
| 1986 | 204 |
| 1987 | 265 |
| 1988 | 356 |
| 1989 | 505 |
| 1990 | 529 |
| 1991 | 658 |
| 1992 | 744 |
| 1993 | 799 |
| 1994 | 840 |
| 1995 | 929 |
| 1996 | 964 |
| 1997 | 1164 |
| 1998 | 1135 |
| 1999 | 1195 |
| 2000 | 1349 |
| 2001 | 1500 |
| 2002 | 1640 |
| 2003 | 1514 |
| 2004 | 1212 |
| 2005 | 1048 |
| 2006 | 1110 |
| 2007 | 1122 |
| 2008 | 1146 |
| 2009 | 1102 |
| 2010 | 1146 |
| 2011 | 1110 |
| 2012 | 1035 |
| 2013 | 953 |
| 2014 | 826 |
| 2015 | 790 |
| 2016 | 718 |
| 2017 | 668 |
| 2018 | 612 |
| 2019 | 591 |
| 2020 | 526 |
| 2021 | 389 |
| 2022 | 50 |
| 2023 | 12 |
| 2024 | 40 |