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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1948 | 1 |
| 1964 | 1 |
| 1965 | 6 |
| 1966 | 12 |
| 1967 | 7 |
| 1968 | 1 |
| 1969 | 1 |
| 1970 | 3 |
| 1971 | 2 |
| 1972 | 2 |
| 1973 | 2 |
| 1974 | 8 |
| 1975 | 11 |
| 1976 | 18 |
| 1977 | 16 |
| 1978 | 22 |
| 1979 | 30 |
| 1980 | 19 |
| 1981 | 28 |
| 1982 | 18 |
| 1983 | 24 |
| 1984 | 28 |
| 1985 | 20 |
| 1986 | 30 |
| 1987 | 34 |
| 1988 | 46 |
| 1989 | 55 |
| 1990 | 56 |
| 1991 | 42 |
| 1992 | 53 |
| 1993 | 64 |
| 1994 | 84 |
| 1995 | 74 |
| 1996 | 90 |
| 1997 | 86 |
| 1998 | 102 |
| 1999 | 84 |
| 2000 | 92 |
| 2001 | 93 |
| 2002 | 100 |
| 2003 | 100 |
| 2004 | 112 |
| 2005 | 127 |
| 2006 | 145 |
| 2007 | 150 |
| 2008 | 183 |
| 2009 | 208 |
| 2010 | 233 |
| 2011 | 236 |
| 2012 | 244 |
| 2013 | 262 |
| 2014 | 304 |
| 2015 | 294 |
| 2016 | 186 |
| 2017 | 152 |
| 2018 | 158 |
| 2019 | 143 |
| 2020 | 113 |
| 2021 | 84 |
| 2022 | 39 |
| 2023 | 39 |
| 2024 | 10 |