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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1956 | 2 |
| 1957 | 1 |
| 1958 | 1 |
| 1959 | 1 |
| 1966 | 7 |
| 1967 | 21 |
| 1968 | 84 |
| 1969 | 64 |
| 1970 | 84 |
| 1971 | 79 |
| 1972 | 97 |
| 1973 | 66 |
| 1974 | 137 |
| 1975 | 208 |
| 1976 | 227 |
| 1977 | 289 |
| 1978 | 235 |
| 1979 | 222 |
| 1980 | 270 |
| 1981 | 436 |
| 1982 | 489 |
| 1983 | 512 |
| 1984 | 512 |
| 1985 | 583 |
| 1986 | 618 |
| 1987 | 704 |
| 1988 | 806 |
| 1989 | 750 |
| 1990 | 795 |
| 1991 | 885 |
| 1992 | 733 |
| 1993 | 780 |
| 1994 | 941 |
| 1995 | 947 |
| 1996 | 923 |
| 1997 | 813 |
| 1998 | 939 |
| 1999 | 944 |
| 2000 | 823 |
| 2001 | 770 |
| 2002 | 669 |
| 2003 | 662 |
| 2004 | 782 |
| 2005 | 895 |
| 2006 | 1047 |
| 2007 | 1075 |
| 2008 | 1019 |
| 2009 | 974 |
| 2010 | 1028 |
| 2011 | 1168 |
| 2012 | 1175 |
| 2013 | 1109 |
| 2014 | 1194 |
| 2015 | 1303 |
| 2016 | 1228 |
| 2017 | 1108 |
| 2018 | 1154 |
| 2019 | 1149 |
| 2020 | 1179 |
| 2021 | 917 |
| 2022 | 668 |
| 2023 | 493 |
| 2024 | 701 |
| 2025 | 976 |