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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1953 | 1 |
| 1956 | 1 |
| 1961 | 1 |
| 1963 | 5 |
| 1964 | 4 |
| 1965 | 10 |
| 1966 | 5 |
| 1967 | 5 |
| 1968 | 13 |
| 1969 | 9 |
| 1970 | 7 |
| 1971 | 7 |
| 1972 | 6 |
| 1973 | 10 |
| 1974 | 13 |
| 1975 | 12 |
| 1976 | 6 |
| 1977 | 24 |
| 1978 | 8 |
| 1979 | 21 |
| 1980 | 23 |
| 1981 | 29 |
| 1982 | 35 |
| 1983 | 35 |
| 1984 | 44 |
| 1985 | 34 |
| 1986 | 57 |
| 1987 | 64 |
| 1988 | 80 |
| 1989 | 81 |
| 1990 | 89 |
| 1991 | 112 |
| 1992 | 130 |
| 1993 | 160 |
| 1994 | 181 |
| 1995 | 166 |
| 1996 | 202 |
| 1997 | 246 |
| 1998 | 252 |
| 1999 | 311 |
| 2000 | 335 |
| 2001 | 400 |
| 2002 | 482 |
| 2003 | 656 |
| 2004 | 774 |
| 2005 | 982 |
| 2006 | 1201 |
| 2007 | 1342 |
| 2008 | 1584 |
| 2009 | 1877 |
| 2010 | 2222 |
| 2011 | 2549 |
| 2012 | 2970 |
| 2013 | 3374 |
| 2014 | 3877 |
| 2015 | 4354 |
| 2016 | 4682 |
| 2017 | 4992 |
| 2018 | 5600 |
| 2019 | 6469 |
| 2020 | 7717 |
| 2021 | 8715 |
| 2022 | 10128 |
| 2023 | 4502 |