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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 2 |
| 1965 | 8 |
| 1966 | 10 |
| 1967 | 15 |
| 1968 | 42 |
| 1969 | 45 |
| 1970 | 65 |
| 1971 | 66 |
| 1972 | 66 |
| 1973 | 78 |
| 1974 | 89 |
| 1975 | 72 |
| 1976 | 85 |
| 1977 | 83 |
| 1978 | 77 |
| 1979 | 65 |
| 1980 | 80 |
| 1981 | 72 |
| 1982 | 98 |
| 1983 | 75 |
| 1984 | 103 |
| 1985 | 98 |
| 1986 | 80 |
| 1987 | 96 |
| 1988 | 90 |
| 1989 | 114 |
| 1990 | 140 |
| 1991 | 111 |
| 1992 | 120 |
| 1993 | 107 |
| 1994 | 152 |
| 1995 | 141 |
| 1996 | 151 |
| 1997 | 133 |
| 1998 | 134 |
| 1999 | 133 |
| 2000 | 127 |
| 2001 | 160 |
| 2002 | 160 |
| 2003 | 117 |
| 2004 | 150 |
| 2005 | 143 |
| 2006 | 134 |
| 2007 | 144 |
| 2008 | 147 |
| 2009 | 144 |
| 2010 | 152 |
| 2011 | 155 |
| 2012 | 137 |
| 2013 | 127 |
| 2014 | 127 |
| 2015 | 128 |
| 2016 | 107 |
| 2017 | 85 |
| 2018 | 103 |
| 2019 | 82 |
| 2020 | 98 |
| 2021 | 69 |
| 2022 | 69 |
| 2023 | 43 |
| 2024 | 11 |