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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1956 | 1 |
| 1959 | 7 |
| 1960 | 3 |
| 1961 | 1 |
| 1962 | 4 |
| 1963 | 4 |
| 1964 | 3 |
| 1965 | 7 |
| 1966 | 3 |
| 1967 | 3 |
| 1968 | 8 |
| 1969 | 3 |
| 1970 | 3 |
| 1971 | 1 |
| 1972 | 5 |
| 1973 | 9 |
| 1974 | 10 |
| 1975 | 10 |
| 1976 | 10 |
| 1977 | 10 |
| 1978 | 11 |
| 1979 | 11 |
| 1980 | 24 |
| 1981 | 34 |
| 1982 | 29 |
| 1983 | 25 |
| 1984 | 33 |
| 1985 | 42 |
| 1986 | 52 |
| 1987 | 64 |
| 1988 | 73 |
| 1989 | 78 |
| 1990 | 74 |
| 1991 | 86 |
| 1992 | 114 |
| 1993 | 120 |
| 1994 | 166 |
| 1995 | 173 |
| 1996 | 179 |
| 1997 | 226 |
| 1998 | 229 |
| 1999 | 303 |
| 2000 | 356 |
| 2001 | 425 |
| 2002 | 501 |
| 2003 | 648 |
| 2004 | 781 |
| 2005 | 1021 |
| 2006 | 1238 |
| 2007 | 1362 |
| 2008 | 1578 |
| 2009 | 1913 |
| 2010 | 2137 |
| 2011 | 2539 |
| 2012 | 2958 |
| 2013 | 3573 |
| 2014 | 4005 |
| 2015 | 4509 |
| 2016 | 4800 |
| 2017 | 5353 |
| 2018 | 6003 |
| 2019 | 7116 |
| 2020 | 8233 |
| 2021 | 9525 |
| 2022 | 11128 |
| 2023 | 5079 |