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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 2 |
| 1948 | 2 |
| 1949 | 3 |
| 1950 | 1 |
| 1951 | 12 |
| 1952 | 10 |
| 1953 | 5 |
| 1954 | 1 |
| 1955 | 5 |
| 1956 | 3 |
| 1957 | 7 |
| 1958 | 10 |
| 1959 | 8 |
| 1960 | 4 |
| 1961 | 6 |
| 1962 | 15 |
| 1963 | 11 |
| 1964 | 15 |
| 1965 | 8 |
| 1966 | 1 |
| 1967 | 6 |
| 1968 | 27 |
| 1969 | 23 |
| 1970 | 45 |
| 1971 | 75 |
| 1972 | 188 |
| 1973 | 156 |
| 1974 | 118 |
| 1975 | 83 |
| 1976 | 65 |
| 1977 | 60 |
| 1978 | 147 |
| 1979 | 150 |
| 1980 | 183 |
| 1981 | 194 |
| 1982 | 192 |
| 1983 | 278 |
| 1984 | 336 |
| 1985 | 387 |
| 1986 | 412 |
| 1987 | 220 |
| 1988 | 177 |
| 1989 | 212 |
| 1990 | 358 |
| 1991 | 399 |
| 1992 | 463 |
| 1993 | 390 |
| 1994 | 376 |
| 1995 | 412 |
| 1996 | 523 |
| 1997 | 397 |
| 1998 | 406 |
| 1999 | 485 |
| 2000 | 456 |
| 2001 | 568 |
| 2002 | 605 |
| 2003 | 582 |
| 2004 | 654 |
| 2005 | 934 |
| 2006 | 1083 |
| 2007 | 890 |
| 2008 | 1228 |
| 2009 | 1452 |
| 2010 | 1131 |
| 2011 | 998 |
| 2012 | 921 |
| 2013 | 926 |
| 2014 | 838 |
| 2015 | 745 |
| 2016 | 608 |
| 2017 | 533 |
| 2018 | 479 |
| 2019 | 326 |
| 2020 | 226 |
| 2021 | 147 |
| 2022 | 81 |
| 2023 | 63 |
| 2024 | 25 |