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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1966 | 1 |
| 1967 | 7 |
| 1968 | 36 |
| 1969 | 39 |
| 1970 | 31 |
| 1971 | 35 |
| 1972 | 31 |
| 1973 | 24 |
| 1974 | 56 |
| 1975 | 70 |
| 1976 | 82 |
| 1977 | 91 |
| 1978 | 57 |
| 1979 | 67 |
| 1980 | 119 |
| 1981 | 141 |
| 1982 | 99 |
| 1983 | 82 |
| 1984 | 69 |
| 1985 | 63 |
| 1986 | 97 |
| 1987 | 99 |
| 1988 | 178 |
| 1989 | 194 |
| 1990 | 225 |
| 1991 | 203 |
| 1992 | 126 |
| 1993 | 117 |
| 1994 | 118 |
| 1995 | 137 |
| 1996 | 127 |
| 1997 | 137 |
| 1998 | 148 |
| 1999 | 158 |
| 2000 | 158 |
| 2001 | 262 |
| 2002 | 285 |
| 2003 | 228 |
| 2004 | 180 |
| 2005 | 135 |
| 2006 | 160 |
| 2007 | 143 |
| 2008 | 115 |
| 2009 | 106 |
| 2010 | 116 |
| 2011 | 124 |
| 2012 | 144 |
| 2013 | 121 |
| 2014 | 110 |
| 2015 | 140 |
| 2016 | 118 |
| 2017 | 67 |
| 2018 | 50 |
| 2019 | 46 |
| 2020 | 43 |
| 2021 | 17 |
| 2022 | 3 |
| 2023 | 6 |
| 2024 | 23 |
| 2025 | 36 |