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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 1 |
| 1965 | 1 |
| 1967 | 1 |
| 1971 | 3 |
| 1972 | 5 |
| 1973 | 12 |
| 1974 | 10 |
| 1975 | 58 |
| 1976 | 71 |
| 1977 | 53 |
| 1978 | 65 |
| 1979 | 46 |
| 1980 | 99 |
| 1981 | 117 |
| 1982 | 99 |
| 1983 | 89 |
| 1984 | 108 |
| 1985 | 101 |
| 1986 | 83 |
| 1987 | 82 |
| 1988 | 79 |
| 1989 | 84 |
| 1990 | 88 |
| 1991 | 83 |
| 1992 | 61 |
| 1993 | 61 |
| 1994 | 66 |
| 1995 | 59 |
| 1996 | 60 |
| 1997 | 67 |
| 1998 | 94 |
| 1999 | 131 |
| 2000 | 123 |
| 2001 | 143 |
| 2002 | 171 |
| 2003 | 249 |
| 2004 | 338 |
| 2005 | 310 |
| 2006 | 495 |
| 2007 | 470 |
| 2008 | 539 |
| 2009 | 681 |
| 2010 | 716 |
| 2011 | 850 |
| 2012 | 772 |
| 2013 | 719 |
| 2014 | 834 |
| 2015 | 871 |
| 2016 | 856 |
| 2017 | 802 |
| 2018 | 931 |
| 2019 | 952 |
| 2020 | 692 |
| 2021 | 430 |
| 2022 | 546 |
| 2023 | 474 |
| 2024 | 335 |