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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 3 |
| 1949 | 2 |
| 1950 | 1 |
| 1951 | 1 |
| 1952 | 3 |
| 1953 | 4 |
| 1954 | 9 |
| 1955 | 4 |
| 1956 | 3 |
| 1957 | 5 |
| 1958 | 1 |
| 1959 | 5 |
| 1960 | 7 |
| 1961 | 22 |
| 1962 | 17 |
| 1963 | 19 |
| 1964 | 24 |
| 1965 | 30 |
| 1966 | 32 |
| 1967 | 34 |
| 1968 | 43 |
| 1969 | 41 |
| 1970 | 35 |
| 1971 | 36 |
| 1972 | 24 |
| 1973 | 24 |
| 1974 | 38 |
| 1975 | 46 |
| 1976 | 34 |
| 1977 | 54 |
| 1978 | 64 |
| 1979 | 56 |
| 1980 | 74 |
| 1981 | 107 |
| 1982 | 118 |
| 1983 | 99 |
| 1984 | 122 |
| 1985 | 130 |
| 1986 | 128 |
| 1987 | 142 |
| 1988 | 139 |
| 1989 | 150 |
| 1990 | 152 |
| 1991 | 183 |
| 1992 | 214 |
| 1993 | 185 |
| 1994 | 201 |
| 1995 | 191 |
| 1996 | 188 |
| 1997 | 208 |
| 1998 | 251 |
| 1999 | 262 |
| 2000 | 263 |
| 2001 | 285 |
| 2002 | 314 |
| 2003 | 290 |
| 2004 | 315 |
| 2005 | 375 |
| 2006 | 415 |
| 2007 | 411 |
| 2008 | 404 |
| 2009 | 407 |
| 2010 | 446 |
| 2011 | 441 |
| 2012 | 492 |
| 2013 | 481 |
| 2014 | 530 |
| 2015 | 557 |
| 2016 | 550 |
| 2017 | 512 |
| 2018 | 540 |
| 2019 | 486 |
| 2020 | 595 |
| 2021 | 666 |
| 2022 | 640 |
| 2023 | 469 |