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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 13 |
| 1966 | 33 |
| 1967 | 31 |
| 1968 | 28 |
| 1969 | 7 |
| 1970 | 31 |
| 1971 | 12 |
| 1972 | 5 |
| 1973 | 3 |
| 1974 | 23 |
| 1975 | 13 |
| 1976 | 12 |
| 1977 | 13 |
| 1978 | 36 |
| 1979 | 57 |
| 1980 | 991 |
| 1981 | 1912 |
| 1982 | 1824 |
| 1983 | 1705 |
| 1984 | 1611 |
| 1985 | 1682 |
| 1986 | 1591 |
| 1987 | 1593 |
| 1988 | 1582 |
| 1989 | 1698 |
| 1990 | 1803 |
| 1991 | 1936 |
| 1992 | 1878 |
| 1993 | 1732 |
| 1994 | 1814 |
| 1995 | 1956 |
| 1996 | 1909 |
| 1997 | 2130 |
| 1998 | 2041 |
| 1999 | 2091 |
| 2000 | 2066 |
| 2001 | 2117 |
| 2002 | 1941 |
| 2003 | 2256 |
| 2004 | 2240 |
| 2005 | 2513 |
| 2006 | 3859 |
| 2007 | 4108 |
| 2008 | 4607 |
| 2009 | 4724 |
| 2010 | 4887 |
| 2011 | 4937 |
| 2012 | 5154 |
| 2013 | 5370 |
| 2014 | 5385 |
| 2015 | 5596 |
| 2016 | 1757 |
| 2017 | 18 |
| 2018 | 4 |
| 2019 | 2 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 1 |