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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1949 | 2 |
| 1952 | 2 |
| 1954 | 2 |
| 1955 | 4 |
| 1956 | 1 |
| 1957 | 2 |
| 1958 | 7 |
| 1959 | 4 |
| 1960 | 4 |
| 1961 | 5 |
| 1962 | 5 |
| 1963 | 3 |
| 1966 | 1 |
| 1967 | 1 |
| 1968 | 16 |
| 1969 | 43 |
| 1970 | 58 |
| 1971 | 72 |
| 1972 | 74 |
| 1973 | 79 |
| 1974 | 142 |
| 1975 | 166 |
| 1976 | 91 |
| 1977 | 89 |
| 1978 | 112 |
| 1979 | 154 |
| 1980 | 81 |
| 1981 | 75 |
| 1982 | 47 |
| 1983 | 57 |
| 1984 | 59 |
| 1985 | 40 |
| 1986 | 72 |
| 1987 | 58 |
| 1988 | 80 |
| 1989 | 63 |
| 1990 | 85 |
| 1991 | 96 |
| 1992 | 108 |
| 1993 | 103 |
| 1994 | 102 |
| 1995 | 103 |
| 1996 | 97 |
| 1997 | 86 |
| 1998 | 109 |
| 1999 | 71 |
| 2000 | 118 |
| 2001 | 103 |
| 2002 | 128 |
| 2003 | 124 |
| 2004 | 170 |
| 2005 | 186 |
| 2006 | 231 |
| 2007 | 236 |
| 2008 | 205 |
| 2009 | 180 |
| 2010 | 153 |
| 2011 | 145 |
| 2012 | 172 |
| 2013 | 180 |
| 2014 | 205 |
| 2015 | 221 |
| 2016 | 208 |
| 2017 | 161 |
| 2018 | 135 |
| 2019 | 131 |
| 2020 | 120 |
| 2021 | 68 |
| 2022 | 64 |
| 2023 | 72 |
| 2024 | 137 |
| 2025 | 165 |
| 2026 | 73 |