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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 2 |
| 1953 | 6 |
| 1954 | 7 |
| 1955 | 7 |
| 1956 | 4 |
| 1957 | 6 |
| 1958 | 15 |
| 1959 | 9 |
| 1960 | 8 |
| 1961 | 13 |
| 1962 | 4 |
| 1965 | 5 |
| 1966 | 48 |
| 1967 | 123 |
| 1968 | 154 |
| 1969 | 218 |
| 1970 | 272 |
| 1971 | 401 |
| 1972 | 565 |
| 1973 | 758 |
| 1974 | 931 |
| 1975 | 1014 |
| 1976 | 985 |
| 1977 | 1025 |
| 1978 | 1059 |
| 1979 | 1179 |
| 1980 | 1213 |
| 1981 | 1213 |
| 1982 | 1195 |
| 1983 | 1303 |
| 1984 | 1406 |
| 1985 | 1410 |
| 1986 | 1342 |
| 1987 | 1301 |
| 1988 | 1302 |
| 1989 | 1374 |
| 1990 | 1374 |
| 1991 | 1354 |
| 1992 | 1325 |
| 1993 | 1357 |
| 1994 | 1251 |
| 1995 | 1275 |
| 1996 | 1206 |
| 1997 | 1291 |
| 1998 | 1276 |
| 1999 | 1348 |
| 2000 | 1524 |
| 2001 | 1555 |
| 2002 | 1494 |
| 2003 | 1577 |
| 2004 | 1569 |
| 2005 | 1704 |
| 2006 | 1845 |
| 2007 | 1822 |
| 2008 | 1883 |
| 2009 | 1906 |
| 2010 | 1885 |
| 2011 | 1962 |
| 2012 | 2010 |
| 2013 | 1907 |
| 2014 | 1871 |
| 2015 | 1843 |
| 2016 | 1663 |
| 2017 | 1637 |
| 2018 | 1549 |
| 2019 | 1445 |
| 2020 | 1249 |
| 2021 | 773 |
| 2022 | 135 |
| 2023 | 28 |
| 2024 | 20 |