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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 | 988 |
| 1981 | 1907 |
| 1982 | 1821 |
| 1983 | 1705 |
| 1984 | 1611 |
| 1985 | 1682 |
| 1986 | 1590 |
| 1987 | 1590 |
| 1988 | 1577 |
| 1989 | 1697 |
| 1990 | 1803 |
| 1991 | 1934 |
| 1992 | 1874 |
| 1993 | 1733 |
| 1994 | 1811 |
| 1995 | 1952 |
| 1996 | 1907 |
| 1997 | 2115 |
| 1998 | 2018 |
| 1999 | 2068 |
| 2000 | 2056 |
| 2001 | 2112 |
| 2002 | 1937 |
| 2003 | 2246 |
| 2004 | 2238 |
| 2005 | 2513 |
| 2006 | 3848 |
| 2007 | 4100 |
| 2008 | 4602 |
| 2009 | 4706 |
| 2010 | 4879 |
| 2011 | 4926 |
| 2012 | 5136 |
| 2013 | 5365 |
| 2014 | 5418 |
| 2015 | 5790 |
| 2016 | 1817 |
| 2017 | 9 |
| 2018 | 1 |
| 2024 | 0 |