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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1953 | 1 |
| 1957 | 1 |
| 1962 | 2 |
| 1963 | 6 |
| 1964 | 3 |
| 1965 | 5 |
| 1966 | 3 |
| 1967 | 4 |
| 1968 | 4 |
| 1969 | 4 |
| 1970 | 10 |
| 1971 | 12 |
| 1972 | 16 |
| 1973 | 13 |
| 1974 | 21 |
| 1975 | 29 |
| 1976 | 29 |
| 1977 | 33 |
| 1978 | 38 |
| 1979 | 37 |
| 1980 | 47 |
| 1981 | 53 |
| 1982 | 55 |
| 1983 | 66 |
| 1984 | 55 |
| 1985 | 62 |
| 1986 | 51 |
| 1987 | 65 |
| 1988 | 71 |
| 1989 | 73 |
| 1990 | 82 |
| 1991 | 91 |
| 1992 | 122 |
| 1993 | 131 |
| 1994 | 101 |
| 1995 | 137 |
| 1996 | 136 |
| 1997 | 320 |
| 1998 | 376 |
| 1999 | 415 |
| 2000 | 440 |
| 2001 | 453 |
| 2002 | 517 |
| 2003 | 557 |
| 2004 | 651 |
| 2005 | 777 |
| 2006 | 867 |
| 2007 | 885 |
| 2008 | 1001 |
| 2009 | 1066 |
| 2010 | 1100 |
| 2011 | 1252 |
| 2012 | 1334 |
| 2013 | 1478 |
| 2014 | 1528 |
| 2015 | 1518 |
| 2016 | 1485 |
| 2017 | 1442 |
| 2018 | 1447 |
| 2019 | 1302 |
| 2020 | 1318 |
| 2021 | 1606 |
| 2022 | 1509 |
| 2023 | 600 |