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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 1 |
| 1956 | 2 |
| 1957 | 1 |
| 1958 | 7 |
| 1959 | 1 |
| 1961 | 7 |
| 1962 | 14 |
| 1963 | 15 |
| 1964 | 11 |
| 1965 | 13 |
| 1966 | 10 |
| 1967 | 17 |
| 1968 | 18 |
| 1969 | 5 |
| 1970 | 18 |
| 1971 | 27 |
| 1972 | 27 |
| 1973 | 27 |
| 1974 | 38 |
| 1975 | 42 |
| 1976 | 43 |
| 1977 | 37 |
| 1978 | 55 |
| 1979 | 65 |
| 1980 | 55 |
| 1981 | 62 |
| 1982 | 45 |
| 1983 | 41 |
| 1984 | 48 |
| 1985 | 80 |
| 1986 | 76 |
| 1987 | 124 |
| 1988 | 145 |
| 1989 | 160 |
| 1990 | 141 |
| 1991 | 154 |
| 1992 | 216 |
| 1993 | 214 |
| 1994 | 269 |
| 1995 | 290 |
| 1996 | 344 |
| 1997 | 358 |
| 1998 | 483 |
| 1999 | 575 |
| 2000 | 715 |
| 2001 | 806 |
| 2002 | 946 |
| 2003 | 1122 |
| 2004 | 1371 |
| 2005 | 1615 |
| 2006 | 1796 |
| 2007 | 2141 |
| 2008 | 2606 |
| 2009 | 2987 |
| 2010 | 3454 |
| 2011 | 3886 |
| 2012 | 4289 |
| 2013 | 4569 |
| 2014 | 4797 |
| 2015 | 4976 |
| 2016 | 5100 |
| 2017 | 5049 |
| 2018 | 5313 |
| 2019 | 5289 |
| 2020 | 5632 |
| 2021 | 5966 |
| 2022 | 5567 |
| 2023 | 2499 |