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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 1 |
| 1955 | 1 |
| 1959 | 2 |
| 1960 | 1 |
| 1961 | 3 |
| 1962 | 1 |
| 1963 | 2 |
| 1965 | 1 |
| 1966 | 2 |
| 1969 | 1 |
| 1970 | 3 |
| 1971 | 28 |
| 1972 | 89 |
| 1973 | 312 |
| 1974 | 375 |
| 1975 | 495 |
| 1976 | 382 |
| 1977 | 476 |
| 1978 | 480 |
| 1979 | 488 |
| 1980 | 522 |
| 1981 | 448 |
| 1982 | 467 |
| 1983 | 448 |
| 1984 | 473 |
| 1985 | 463 |
| 1986 | 539 |
| 1987 | 579 |
| 1988 | 643 |
| 1989 | 773 |
| 1990 | 761 |
| 1991 | 877 |
| 1992 | 883 |
| 1993 | 967 |
| 1994 | 1053 |
| 1995 | 996 |
| 1996 | 1004 |
| 1997 | 1098 |
| 1998 | 1050 |
| 1999 | 1102 |
| 2000 | 1089 |
| 2001 | 1299 |
| 2002 | 1192 |
| 2003 | 1347 |
| 2004 | 1344 |
| 2005 | 1341 |
| 2006 | 1271 |
| 2007 | 1132 |
| 2008 | 1239 |
| 2009 | 1214 |
| 2010 | 1234 |
| 2011 | 1209 |
| 2012 | 1288 |
| 2013 | 1328 |
| 2014 | 1283 |
| 2015 | 1288 |
| 2016 | 1110 |
| 2017 | 1087 |
| 2018 | 1070 |
| 2019 | 1064 |
| 2020 | 1045 |
| 2021 | 878 |
| 2022 | 691 |
| 2023 | 634 |
| 2024 | 340 |