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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 2 |
| 1953 | 2 |
| 1954 | 5 |
| 1955 | 3 |
| 1956 | 5 |
| 1957 | 8 |
| 1958 | 6 |
| 1959 | 2 |
| 1960 | 6 |
| 1961 | 4 |
| 1962 | 6 |
| 1965 | 7 |
| 1966 | 22 |
| 1967 | 23 |
| 1968 | 29 |
| 1969 | 27 |
| 1970 | 37 |
| 1971 | 50 |
| 1972 | 62 |
| 1973 | 88 |
| 1974 | 100 |
| 1975 | 117 |
| 1976 | 84 |
| 1977 | 100 |
| 1978 | 78 |
| 1979 | 74 |
| 1980 | 82 |
| 1981 | 89 |
| 1982 | 117 |
| 1983 | 105 |
| 1984 | 131 |
| 1985 | 126 |
| 1986 | 124 |
| 1987 | 99 |
| 1988 | 104 |
| 1989 | 113 |
| 1990 | 116 |
| 1991 | 148 |
| 1992 | 111 |
| 1993 | 123 |
| 1994 | 114 |
| 1995 | 135 |
| 1996 | 123 |
| 1997 | 146 |
| 1998 | 132 |
| 1999 | 110 |
| 2000 | 128 |
| 2001 | 106 |
| 2002 | 98 |
| 2003 | 123 |
| 2004 | 143 |
| 2005 | 138 |
| 2006 | 132 |
| 2007 | 126 |
| 2008 | 125 |
| 2009 | 134 |
| 2010 | 157 |
| 2011 | 146 |
| 2012 | 164 |
| 2013 | 141 |
| 2014 | 151 |
| 2015 | 150 |
| 2016 | 129 |
| 2017 | 131 |
| 2018 | 113 |
| 2019 | 123 |
| 2020 | 92 |
| 2021 | 58 |
| 2022 | 57 |
| 2023 | 46 |
| 2024 | 13 |