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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 1 |
| 1949 | 2 |
| 1950 | 2 |
| 1957 | 2 |
| 1958 | 2 |
| 1959 | 2 |
| 1960 | 1 |
| 1961 | 1 |
| 1962 | 2 |
| 1963 | 5 |
| 1964 | 4 |
| 1965 | 2 |
| 1966 | 4 |
| 1967 | 7 |
| 1968 | 15 |
| 1969 | 12 |
| 1970 | 23 |
| 1971 | 23 |
| 1972 | 23 |
| 1973 | 29 |
| 1974 | 25 |
| 1975 | 27 |
| 1976 | 29 |
| 1977 | 15 |
| 1978 | 36 |
| 1979 | 34 |
| 1980 | 40 |
| 1981 | 64 |
| 1982 | 53 |
| 1983 | 81 |
| 1984 | 81 |
| 1985 | 130 |
| 1986 | 168 |
| 1987 | 190 |
| 1988 | 170 |
| 1989 | 221 |
| 1990 | 217 |
| 1991 | 285 |
| 1992 | 311 |
| 1993 | 352 |
| 1994 | 492 |
| 1995 | 501 |
| 1996 | 592 |
| 1997 | 670 |
| 1998 | 737 |
| 1999 | 803 |
| 2000 | 916 |
| 2001 | 1110 |
| 2002 | 1371 |
| 2003 | 1494 |
| 2004 | 1803 |
| 2005 | 2333 |
| 2006 | 2766 |
| 2007 | 3156 |
| 2008 | 3662 |
| 2009 | 4158 |
| 2010 | 5020 |
| 2011 | 5782 |
| 2012 | 6668 |
| 2013 | 8271 |
| 2014 | 9205 |
| 2015 | 10364 |
| 2016 | 10812 |
| 2017 | 11938 |
| 2018 | 13606 |
| 2019 | 15530 |
| 2020 | 18277 |
| 2021 | 20904 |
| 2022 | 24601 |
| 2023 | 11555 |