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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 1 |
| 1965 | 9 |
| 1966 | 21 |
| 1967 | 18 |
| 1968 | 39 |
| 1969 | 34 |
| 1970 | 42 |
| 1971 | 45 |
| 1972 | 65 |
| 1973 | 60 |
| 1974 | 60 |
| 1975 | 74 |
| 1976 | 68 |
| 1977 | 96 |
| 1978 | 71 |
| 1979 | 95 |
| 1980 | 92 |
| 1981 | 74 |
| 1982 | 123 |
| 1983 | 126 |
| 1984 | 143 |
| 1985 | 136 |
| 1986 | 107 |
| 1987 | 109 |
| 1988 | 118 |
| 1989 | 91 |
| 1990 | 92 |
| 1991 | 81 |
| 1992 | 80 |
| 1993 | 89 |
| 1994 | 97 |
| 1995 | 92 |
| 1996 | 91 |
| 1997 | 117 |
| 1998 | 98 |
| 1999 | 105 |
| 2000 | 112 |
| 2001 | 137 |
| 2002 | 162 |
| 2003 | 163 |
| 2004 | 150 |
| 2005 | 121 |
| 2006 | 120 |
| 2007 | 140 |
| 2008 | 126 |
| 2009 | 158 |
| 2010 | 155 |
| 2011 | 174 |
| 2012 | 188 |
| 2013 | 142 |
| 2014 | 163 |
| 2015 | 149 |
| 2016 | 145 |
| 2017 | 155 |
| 2018 | 159 |
| 2019 | 170 |
| 2020 | 225 |
| 2021 | 206 |
| 2022 | 216 |
| 2023 | 140 |
| 2024 | 143 |
| 2025 | 73 |