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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1953 | 1 |
| 1955 | 1 |
| 1960 | 1 |
| 1961 | 5 |
| 1962 | 3 |
| 1963 | 5 |
| 1964 | 4 |
| 1965 | 2 |
| 1966 | 7 |
| 1967 | 18 |
| 1968 | 15 |
| 1969 | 12 |
| 1970 | 15 |
| 1971 | 13 |
| 1972 | 12 |
| 1973 | 12 |
| 1974 | 17 |
| 1975 | 11 |
| 1976 | 18 |
| 1977 | 17 |
| 1978 | 31 |
| 1979 | 17 |
| 1980 | 16 |
| 1981 | 19 |
| 1982 | 21 |
| 1983 | 25 |
| 1984 | 31 |
| 1985 | 54 |
| 1986 | 74 |
| 1987 | 53 |
| 1988 | 83 |
| 1989 | 102 |
| 1990 | 89 |
| 1991 | 93 |
| 1992 | 114 |
| 1993 | 106 |
| 1994 | 99 |
| 1995 | 113 |
| 1996 | 108 |
| 1997 | 111 |
| 1998 | 105 |
| 1999 | 108 |
| 2000 | 107 |
| 2001 | 87 |
| 2002 | 104 |
| 2003 | 114 |
| 2004 | 150 |
| 2005 | 139 |
| 2006 | 143 |
| 2007 | 119 |
| 2008 | 112 |
| 2009 | 107 |
| 2010 | 121 |
| 2011 | 129 |
| 2012 | 153 |
| 2013 | 161 |
| 2014 | 155 |
| 2015 | 174 |
| 2016 | 166 |
| 2017 | 218 |
| 2018 | 196 |
| 2019 | 210 |
| 2020 | 221 |
| 2021 | 241 |
| 2022 | 231 |
| 2023 | 196 |
| 2024 | 200 |
| 2025 | 15 |