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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 | 3 |
| 1971 | 5 |
| 1972 | 4 |
| 1973 | 7 |
| 1974 | 5 |
| 1975 | 9 |
| 1976 | 16 |
| 1977 | 23 |
| 1978 | 19 |
| 1979 | 16 |
| 1980 | 12 |
| 1981 | 12 |
| 1982 | 22 |
| 1983 | 25 |
| 1984 | 38 |
| 1985 | 18 |
| 1986 | 21 |
| 1987 | 19 |
| 1988 | 25 |
| 1989 | 27 |
| 1990 | 38 |
| 1991 | 51 |
| 1992 | 37 |
| 1993 | 45 |
| 1994 | 45 |
| 1995 | 39 |
| 1996 | 42 |
| 1997 | 66 |
| 1998 | 52 |
| 1999 | 84 |
| 2000 | 64 |
| 2001 | 44 |
| 2002 | 44 |
| 2003 | 79 |
| 2004 | 101 |
| 2005 | 120 |
| 2006 | 108 |
| 2007 | 111 |
| 2008 | 136 |
| 2009 | 128 |
| 2010 | 135 |
| 2011 | 176 |
| 2012 | 166 |
| 2013 | 154 |
| 2014 | 175 |
| 2015 | 152 |
| 2016 | 136 |
| 2017 | 110 |
| 2018 | 99 |
| 2019 | 104 |
| 2020 | 115 |
| 2021 | 119 |
| 2022 | 69 |
| 2023 | 77 |
| 2024 | 64 |
| 2025 | 85 |
| 2026 | 30 |