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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1957 | 13 |
| 1958 | 67 |
| 1959 | 64 |
| 1960 | 50 |
| 1961 | 61 |
| 1962 | 62 |
| 1963 | 69 |
| 1964 | 69 |
| 1965 | 52 |
| 1966 | 69 |
| 1967 | 72 |
| 1968 | 73 |
| 1969 | 70 |
| 1970 | 71 |
| 1971 | 68 |
| 1972 | 63 |
| 1973 | 70 |
| 1974 | 91 |
| 1975 | 79 |
| 1976 | 78 |
| 1977 | 103 |
| 1978 | 126 |
| 1979 | 136 |
| 1980 | 133 |
| 1981 | 133 |
| 1982 | 141 |
| 1983 | 154 |
| 1984 | 159 |
| 1985 | 148 |
| 1986 | 141 |
| 1987 | 143 |
| 1988 | 125 |
| 1989 | 112 |
| 1990 | 110 |
| 1991 | 130 |
| 1992 | 135 |
| 1993 | 109 |
| 1994 | 98 |
| 1995 | 132 |
| 1996 | 112 |
| 1997 | 97 |
| 1998 | 92 |
| 1999 | 103 |
| 2000 | 101 |
| 2001 | 97 |
| 2002 | 111 |
| 2003 | 104 |
| 2004 | 109 |
| 2005 | 111 |
| 2006 | 85 |
| 2007 | 104 |
| 2008 | 152 |
| 2009 | 191 |
| 2010 | 78 |
| 2011 | 83 |
| 2012 | 79 |
| 2013 | 105 |
| 2014 | 112 |
| 2015 | 115 |
| 2016 | 96 |
| 2017 | 104 |
| 2018 | 98 |
| 2019 | 97 |
| 2020 | 108 |
| 2021 | 121 |
| 2022 | 127 |
| 2023 | 90 |