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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1949 | 1 |
| 1951 | 3 |
| 1952 | 1 |
| 1953 | 3 |
| 1954 | 1 |
| 1955 | 1 |
| 1956 | 1 |
| 1957 | 1 |
| 1958 | 1 |
| 1959 | 4 |
| 1961 | 1 |
| 1962 | 8 |
| 1963 | 4 |
| 1964 | 2 |
| 1975 | 2 |
| 1977 | 1 |
| 1979 | 44 |
| 1980 | 125 |
| 1981 | 142 |
| 1982 | 125 |
| 1983 | 103 |
| 1984 | 105 |
| 1985 | 123 |
| 1986 | 116 |
| 1987 | 96 |
| 1988 | 113 |
| 1989 | 153 |
| 1990 | 119 |
| 1991 | 85 |
| 1992 | 96 |
| 1993 | 120 |
| 1994 | 93 |
| 1995 | 94 |
| 1996 | 107 |
| 1997 | 89 |
| 1998 | 84 |
| 1999 | 80 |
| 2000 | 84 |
| 2001 | 66 |
| 2002 | 91 |
| 2003 | 70 |
| 2004 | 46 |
| 2005 | 46 |
| 2006 | 74 |
| 2007 | 80 |
| 2008 | 69 |
| 2009 | 55 |
| 2010 | 58 |
| 2011 | 40 |
| 2012 | 52 |
| 2013 | 31 |
| 2014 | 36 |
| 2015 | 40 |
| 2016 | 18 |
| 2017 | 19 |
| 2018 | 18 |
| 2019 | 13 |
| 2020 | 9 |
| 2021 | 11 |
| 2022 | 11 |
| 2023 | 9 |
| 2024 | 4 |
| 2025 | 5 |
| 2026 | 6 |