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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1961 | 1 |
| 1962 | 8 |
| 1967 | 2 |
| 1968 | 6 |
| 1969 | 3 |
| 1971 | 4 |
| 1972 | 3 |
| 1973 | 3 |
| 1974 | 11 |
| 1975 | 9 |
| 1976 | 8 |
| 1977 | 13 |
| 1978 | 10 |
| 1979 | 10 |
| 1980 | 11 |
| 1981 | 22 |
| 1982 | 10 |
| 1983 | 8 |
| 1984 | 11 |
| 1985 | 16 |
| 1986 | 10 |
| 1987 | 23 |
| 1988 | 23 |
| 1989 | 25 |
| 1990 | 27 |
| 1991 | 27 |
| 1992 | 36 |
| 1993 | 42 |
| 1994 | 31 |
| 1995 | 45 |
| 1996 | 32 |
| 1997 | 55 |
| 1998 | 62 |
| 1999 | 66 |
| 2000 | 113 |
| 2001 | 114 |
| 2002 | 144 |
| 2003 | 189 |
| 2004 | 201 |
| 2005 | 279 |
| 2006 | 321 |
| 2007 | 355 |
| 2008 | 389 |
| 2009 | 477 |
| 2010 | 572 |
| 2011 | 604 |
| 2012 | 742 |
| 2013 | 797 |
| 2014 | 939 |
| 2015 | 940 |
| 2016 | 932 |
| 2017 | 966 |
| 2018 | 997 |
| 2019 | 1068 |
| 2020 | 1062 |
| 2021 | 1123 |
| 2022 | 1051 |
| 2023 | 244 |