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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 2 |
| 1948 | 4 |
| 1956 | 1 |
| 1957 | 2 |
| 1958 | 2 |
| 1959 | 2 |
| 1960 | 6 |
| 1961 | 4 |
| 1962 | 8 |
| 1965 | 5 |
| 1966 | 15 |
| 1967 | 34 |
| 1968 | 51 |
| 1969 | 63 |
| 1970 | 52 |
| 1971 | 102 |
| 1972 | 145 |
| 1973 | 148 |
| 1974 | 286 |
| 1975 | 398 |
| 1976 | 403 |
| 1977 | 424 |
| 1978 | 452 |
| 1979 | 396 |
| 1980 | 363 |
| 1981 | 295 |
| 1982 | 374 |
| 1983 | 380 |
| 1984 | 345 |
| 1985 | 365 |
| 1986 | 384 |
| 1987 | 390 |
| 1988 | 448 |
| 1989 | 499 |
| 1990 | 493 |
| 1991 | 566 |
| 1992 | 591 |
| 1993 | 658 |
| 1994 | 726 |
| 1995 | 898 |
| 1996 | 879 |
| 1997 | 891 |
| 1998 | 962 |
| 1999 | 1038 |
| 2000 | 775 |
| 2001 | 853 |
| 2002 | 731 |
| 2003 | 783 |
| 2004 | 909 |
| 2005 | 950 |
| 2006 | 1102 |
| 2007 | 1228 |
| 2008 | 1201 |
| 2009 | 1112 |
| 2010 | 1336 |
| 2011 | 1303 |
| 2012 | 1381 |
| 2013 | 1437 |
| 2014 | 1573 |
| 2015 | 1790 |
| 2016 | 1991 |
| 2017 | 2056 |
| 2018 | 2107 |
| 2019 | 2149 |
| 2020 | 1744 |
| 2021 | 897 |
| 2022 | 708 |
| 2023 | 559 |
| 2024 | 170 |