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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 1 |
| 1952 | 7 |
| 1953 | 5 |
| 1954 | 5 |
| 1955 | 5 |
| 1956 | 7 |
| 1957 | 3 |
| 1959 | 3 |
| 1963 | 1 |
| 1964 | 6 |
| 1969 | 1 |
| 1972 | 1 |
| 1973 | 1 |
| 1975 | 5 |
| 1976 | 2 |
| 1977 | 7 |
| 1978 | 8 |
| 1979 | 13 |
| 1980 | 18 |
| 1981 | 17 |
| 1982 | 24 |
| 1983 | 27 |
| 1984 | 31 |
| 1985 | 33 |
| 1986 | 21 |
| 1987 | 28 |
| 1988 | 40 |
| 1989 | 51 |
| 1990 | 35 |
| 1991 | 35 |
| 1992 | 37 |
| 1993 | 56 |
| 1994 | 51 |
| 1995 | 49 |
| 1996 | 61 |
| 1997 | 74 |
| 1998 | 62 |
| 1999 | 72 |
| 2000 | 69 |
| 2001 | 72 |
| 2002 | 94 |
| 2003 | 95 |
| 2004 | 86 |
| 2005 | 88 |
| 2006 | 84 |
| 2007 | 96 |
| 2008 | 79 |
| 2009 | 96 |
| 2010 | 91 |
| 2011 | 92 |
| 2012 | 98 |
| 2013 | 88 |
| 2014 | 100 |
| 2015 | 85 |
| 2016 | 100 |
| 2017 | 92 |
| 2018 | 76 |
| 2019 | 51 |
| 2020 | 70 |
| 2021 | 79 |
| 2022 | 69 |
| 2023 | 53 |
| 2024 | 53 |