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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 2 |
| 1965 | 4 |
| 1966 | 17 |
| 1967 | 20 |
| 1968 | 18 |
| 1969 | 20 |
| 1970 | 12 |
| 1971 | 20 |
| 1972 | 20 |
| 1973 | 27 |
| 1974 | 29 |
| 1975 | 28 |
| 1976 | 34 |
| 1977 | 52 |
| 1978 | 45 |
| 1979 | 47 |
| 1980 | 47 |
| 1981 | 55 |
| 1982 | 53 |
| 1983 | 45 |
| 1984 | 55 |
| 1985 | 72 |
| 1986 | 52 |
| 1987 | 67 |
| 1988 | 48 |
| 1989 | 71 |
| 1990 | 44 |
| 1991 | 60 |
| 1992 | 40 |
| 1993 | 46 |
| 1994 | 79 |
| 1995 | 77 |
| 1996 | 101 |
| 1997 | 100 |
| 1998 | 84 |
| 1999 | 96 |
| 2000 | 94 |
| 2001 | 95 |
| 2002 | 100 |
| 2003 | 98 |
| 2004 | 127 |
| 2005 | 153 |
| 2006 | 137 |
| 2007 | 132 |
| 2008 | 111 |
| 2009 | 122 |
| 2010 | 120 |
| 2011 | 140 |
| 2012 | 99 |
| 2013 | 89 |
| 2014 | 116 |
| 2015 | 112 |
| 2016 | 106 |
| 2017 | 85 |
| 2018 | 91 |
| 2019 | 80 |
| 2020 | 76 |
| 2021 | 49 |
| 2022 | 10 |
| 2023 | 12 |
| 2024 | 4 |