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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 21 |
| 1969 | 65 |
| 1970 | 40 |
| 1971 | 72 |
| 1972 | 73 |
| 1973 | 100 |
| 1974 | 120 |
| 1975 | 111 |
| 1976 | 112 |
| 1977 | 70 |
| 1978 | 91 |
| 1979 | 105 |
| 1980 | 131 |
| 1981 | 127 |
| 1982 | 147 |
| 1983 | 154 |
| 1984 | 172 |
| 1985 | 162 |
| 1986 | 266 |
| 1987 | 161 |
| 1988 | 183 |
| 1989 | 204 |
| 1990 | 206 |
| 1991 | 199 |
| 1992 | 218 |
| 1993 | 244 |
| 1994 | 152 |
| 1995 | 157 |
| 1996 | 124 |
| 1997 | 104 |
| 1998 | 97 |
| 1999 | 106 |
| 2000 | 88 |
| 2001 | 90 |
| 2002 | 84 |
| 2003 | 82 |
| 2004 | 94 |
| 2005 | 76 |
| 2006 | 86 |
| 2007 | 74 |
| 2008 | 88 |
| 2009 | 105 |
| 2010 | 87 |
| 2011 | 75 |
| 2012 | 96 |
| 2013 | 74 |
| 2014 | 57 |
| 2015 | 118 |
| 2016 | 129 |
| 2017 | 108 |
| 2018 | 101 |
| 2019 | 147 |
| 2020 | 188 |
| 2021 | 176 |
| 2022 | 131 |
| 2023 | 127 |
| 2024 | 53 |