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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1955 | 1 |
| 1963 | 5 |
| 1964 | 2 |
| 1965 | 2 |
| 1966 | 5 |
| 1967 | 3 |
| 1968 | 1 |
| 1969 | 1 |
| 1970 | 4 |
| 1971 | 4 |
| 1972 | 10 |
| 1973 | 9 |
| 1974 | 8 |
| 1975 | 10 |
| 1976 | 8 |
| 1977 | 10 |
| 1978 | 24 |
| 1979 | 21 |
| 1980 | 21 |
| 1981 | 20 |
| 1982 | 26 |
| 1983 | 22 |
| 1984 | 21 |
| 1985 | 30 |
| 1986 | 24 |
| 1987 | 42 |
| 1988 | 48 |
| 1989 | 54 |
| 1990 | 35 |
| 1991 | 43 |
| 1992 | 22 |
| 1993 | 36 |
| 1994 | 41 |
| 1995 | 47 |
| 1996 | 68 |
| 1997 | 54 |
| 1998 | 55 |
| 1999 | 75 |
| 2000 | 75 |
| 2001 | 85 |
| 2002 | 174 |
| 2003 | 247 |
| 2004 | 294 |
| 2005 | 319 |
| 2006 | 440 |
| 2007 | 455 |
| 2008 | 508 |
| 2009 | 435 |
| 2010 | 583 |
| 2011 | 556 |
| 2012 | 574 |
| 2013 | 608 |
| 2014 | 683 |
| 2015 | 799 |
| 2016 | 763 |
| 2017 | 775 |
| 2018 | 837 |
| 2019 | 851 |
| 2020 | 930 |
| 2021 | 972 |
| 2022 | 982 |
| 2023 | 907 |
| 2024 | 472 |