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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1962 | 1 |
| 1966 | 5 |
| 1967 | 2 |
| 1968 | 2 |
| 1969 | 4 |
| 1970 | 2 |
| 1971 | 1 |
| 1972 | 1 |
| 1973 | 2 |
| 1974 | 4 |
| 1976 | 10 |
| 1977 | 4 |
| 1978 | 5 |
| 1979 | 5 |
| 1980 | 7 |
| 1981 | 8 |
| 1982 | 6 |
| 1983 | 6 |
| 1984 | 13 |
| 1985 | 7 |
| 1986 | 17 |
| 1987 | 13 |
| 1988 | 25 |
| 1989 | 25 |
| 1990 | 24 |
| 1991 | 35 |
| 1992 | 45 |
| 1993 | 48 |
| 1994 | 64 |
| 1995 | 50 |
| 1996 | 63 |
| 1997 | 86 |
| 1998 | 100 |
| 1999 | 136 |
| 2000 | 193 |
| 2001 | 201 |
| 2002 | 233 |
| 2003 | 299 |
| 2004 | 315 |
| 2005 | 387 |
| 2006 | 428 |
| 2007 | 456 |
| 2008 | 532 |
| 2009 | 634 |
| 2010 | 760 |
| 2011 | 869 |
| 2012 | 955 |
| 2013 | 1088 |
| 2014 | 1064 |
| 2015 | 1125 |
| 2016 | 1169 |
| 2017 | 1212 |
| 2018 | 1222 |
| 2019 | 1259 |
| 2020 | 1375 |
| 2021 | 1476 |
| 2022 | 1328 |
| 2023 | 324 |