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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 1 |
| 1955 | 1 |
| 1956 | 3 |
| 1957 | 2 |
| 1958 | 1 |
| 1959 | 1 |
| 1961 | 4 |
| 1962 | 1 |
| 1964 | 1 |
| 1965 | 14 |
| 1966 | 57 |
| 1967 | 33 |
| 1968 | 52 |
| 1969 | 100 |
| 1970 | 46 |
| 1971 | 58 |
| 1972 | 51 |
| 1973 | 61 |
| 1974 | 52 |
| 1975 | 56 |
| 1976 | 60 |
| 1977 | 83 |
| 1978 | 46 |
| 1979 | 79 |
| 1980 | 67 |
| 1981 | 96 |
| 1982 | 135 |
| 1983 | 177 |
| 1984 | 211 |
| 1985 | 191 |
| 1986 | 228 |
| 1987 | 279 |
| 1988 | 316 |
| 1989 | 297 |
| 1990 | 390 |
| 1991 | 386 |
| 1992 | 356 |
| 1993 | 310 |
| 1994 | 373 |
| 1995 | 302 |
| 1996 | 293 |
| 1997 | 338 |
| 1998 | 330 |
| 1999 | 451 |
| 2000 | 421 |
| 2001 | 473 |
| 2002 | 584 |
| 2003 | 518 |
| 2004 | 604 |
| 2005 | 677 |
| 2006 | 637 |
| 2007 | 734 |
| 2008 | 736 |
| 2009 | 779 |
| 2010 | 784 |
| 2011 | 809 |
| 2012 | 843 |
| 2013 | 947 |
| 2014 | 822 |
| 2015 | 874 |
| 2016 | 774 |
| 2017 | 740 |
| 2018 | 774 |
| 2019 | 726 |
| 2020 | 722 |
| 2021 | 665 |
| 2022 | 306 |
| 2023 | 210 |
| 2024 | 62 |