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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1966 | 3 |
| 1967 | 4 |
| 1968 | 8 |
| 1969 | 3 |
| 1970 | 5 |
| 1971 | 8 |
| 1972 | 7 |
| 1973 | 5 |
| 1974 | 10 |
| 1975 | 6 |
| 1976 | 11 |
| 1977 | 11 |
| 1978 | 34 |
| 1979 | 26 |
| 1980 | 30 |
| 1981 | 30 |
| 1982 | 32 |
| 1983 | 15 |
| 1984 | 44 |
| 1985 | 52 |
| 1986 | 70 |
| 1987 | 73 |
| 1988 | 84 |
| 1989 | 112 |
| 1990 | 144 |
| 1991 | 152 |
| 1992 | 167 |
| 1993 | 135 |
| 1994 | 160 |
| 1995 | 131 |
| 1996 | 138 |
| 1997 | 130 |
| 1998 | 170 |
| 1999 | 220 |
| 2000 | 216 |
| 2001 | 164 |
| 2002 | 144 |
| 2003 | 173 |
| 2004 | 201 |
| 2005 | 174 |
| 2006 | 121 |
| 2007 | 149 |
| 2008 | 139 |
| 2009 | 167 |
| 2010 | 183 |
| 2011 | 217 |
| 2012 | 201 |
| 2013 | 202 |
| 2014 | 207 |
| 2015 | 149 |
| 2016 | 87 |
| 2017 | 101 |
| 2018 | 106 |
| 2019 | 99 |
| 2020 | 51 |
| 2021 | 20 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |