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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1952 | 1 |
| 1956 | 2 |
| 1957 | 1 |
| 1958 | 5 |
| 1960 | 3 |
| 1962 | 2 |
| 1965 | 5 |
| 1966 | 15 |
| 1967 | 16 |
| 1968 | 31 |
| 1969 | 37 |
| 1970 | 39 |
| 1971 | 55 |
| 1972 | 47 |
| 1973 | 69 |
| 1974 | 88 |
| 1975 | 63 |
| 1976 | 84 |
| 1977 | 87 |
| 1978 | 61 |
| 1979 | 99 |
| 1980 | 96 |
| 1981 | 173 |
| 1982 | 148 |
| 1983 | 156 |
| 1984 | 136 |
| 1985 | 157 |
| 1986 | 145 |
| 1987 | 140 |
| 1988 | 121 |
| 1989 | 136 |
| 1990 | 137 |
| 1991 | 145 |
| 1992 | 165 |
| 1993 | 225 |
| 1994 | 205 |
| 1995 | 284 |
| 1996 | 312 |
| 1997 | 330 |
| 1998 | 340 |
| 1999 | 380 |
| 2000 | 428 |
| 2001 | 403 |
| 2002 | 432 |
| 2003 | 483 |
| 2004 | 545 |
| 2005 | 481 |
| 2006 | 486 |
| 2007 | 496 |
| 2008 | 549 |
| 2009 | 606 |
| 2010 | 777 |
| 2011 | 912 |
| 2012 | 1000 |
| 2013 | 1091 |
| 2014 | 1159 |
| 2015 | 1171 |
| 2016 | 1168 |
| 2017 | 1130 |
| 2018 | 1208 |
| 2019 | 1257 |
| 2020 | 1435 |
| 2021 | 1541 |
| 2022 | 1432 |
| 2023 | 1158 |
| 2024 | 1336 |
| 2025 | 844 |