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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1939 | 1 |
| 1940 | 1 |
| 1941 | 2 |
| 1942 | 1 |
| 1943 | 2 |
| 1945 | 1 |
| 1946 | 1 |
| 1947 | 3 |
| 1948 | 2 |
| 1949 | 2 |
| 1951 | 1 |
| 1953 | 2 |
| 1956 | 1 |
| 1957 | 4 |
| 1958 | 3 |
| 1959 | 12 |
| 1960 | 9 |
| 1961 | 5 |
| 1962 | 8 |
| 1963 | 16 |
| 1964 | 22 |
| 1965 | 19 |
| 1966 | 10 |
| 1967 | 5 |
| 1968 | 6 |
| 1969 | 5 |
| 1970 | 4 |
| 1971 | 7 |
| 1972 | 12 |
| 1973 | 8 |
| 1974 | 11 |
| 1975 | 7 |
| 1976 | 6 |
| 1977 | 11 |
| 1978 | 13 |
| 1979 | 32 |
| 1980 | 33 |
| 1981 | 47 |
| 1982 | 60 |
| 1983 | 71 |
| 1984 | 90 |
| 1985 | 151 |
| 1986 | 111 |
| 1987 | 149 |
| 1988 | 184 |
| 1989 | 195 |
| 1990 | 241 |
| 1991 | 266 |
| 1992 | 287 |
| 1993 | 390 |
| 1994 | 425 |
| 1995 | 477 |
| 1996 | 556 |
| 1997 | 619 |
| 1998 | 625 |
| 1999 | 737 |
| 2000 | 902 |
| 2001 | 1002 |
| 2002 | 1223 |
| 2003 | 1593 |
| 2004 | 2053 |
| 2005 | 2623 |
| 2006 | 3207 |
| 2007 | 3618 |
| 2008 | 4408 |
| 2009 | 5269 |
| 2010 | 6116 |
| 2011 | 7142 |
| 2012 | 8527 |
| 2013 | 10218 |
| 2014 | 11995 |
| 2015 | 13483 |
| 2016 | 14250 |
| 2017 | 16108 |
| 2018 | 18938 |
| 2019 | 22032 |
| 2020 | 25910 |
| 2021 | 29777 |
| 2022 | 35861 |
| 2023 | 16556 |