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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 5 |
| 1948 | 1 |
| 1950 | 1 |
| 1951 | 1 |
| 1953 | 2 |
| 1955 | 1 |
| 1957 | 2 |
| 1958 | 4 |
| 1959 | 2 |
| 1960 | 1 |
| 1961 | 9 |
| 1962 | 13 |
| 1963 | 15 |
| 1964 | 24 |
| 1965 | 16 |
| 1966 | 2 |
| 1968 | 1 |
| 1969 | 1 |
| 1970 | 5 |
| 1971 | 125 |
| 1972 | 231 |
| 1973 | 224 |
| 1974 | 258 |
| 1975 | 293 |
| 1976 | 362 |
| 1977 | 420 |
| 1978 | 333 |
| 1979 | 335 |
| 1980 | 445 |
| 1981 | 371 |
| 1982 | 388 |
| 1983 | 473 |
| 1984 | 465 |
| 1985 | 496 |
| 1986 | 576 |
| 1987 | 623 |
| 1988 | 608 |
| 1989 | 669 |
| 1990 | 647 |
| 1991 | 632 |
| 1992 | 788 |
| 1993 | 887 |
| 1994 | 904 |
| 1995 | 876 |
| 1996 | 910 |
| 1997 | 1099 |
| 1998 | 1132 |
| 1999 | 1199 |
| 2000 | 1286 |
| 2001 | 1468 |
| 2002 | 1990 |
| 2003 | 2319 |
| 2004 | 1585 |
| 2005 | 1632 |
| 2006 | 1734 |
| 2007 | 1696 |
| 2008 | 1872 |
| 2009 | 1874 |
| 2010 | 2004 |
| 2011 | 2241 |
| 2012 | 2147 |
| 2013 | 1976 |
| 2014 | 1775 |
| 2015 | 1698 |
| 2016 | 1509 |
| 2017 | 1493 |
| 2018 | 1608 |
| 2019 | 1601 |
| 2020 | 1226 |
| 2021 | 998 |
| 2022 | 662 |
| 2023 | 552 |
| 2024 | 703 |
| 2025 | 17 |