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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 1 |
| 1959 | 1 |
| 1962 | 1 |
| 1974 | 1 |
| 1977 | 3 |
| 1978 | 12 |
| 1979 | 26 |
| 1980 | 18 |
| 1981 | 4 |
| 1982 | 25 |
| 1983 | 25 |
| 1984 | 22 |
| 1985 | 30 |
| 1986 | 32 |
| 1987 | 62 |
| 1988 | 69 |
| 1989 | 75 |
| 1990 | 70 |
| 1991 | 102 |
| 1992 | 73 |
| 1993 | 96 |
| 1994 | 92 |
| 1995 | 99 |
| 1996 | 105 |
| 1997 | 78 |
| 1998 | 69 |
| 1999 | 117 |
| 2000 | 91 |
| 2001 | 78 |
| 2002 | 100 |
| 2003 | 101 |
| 2004 | 86 |
| 2005 | 88 |
| 2006 | 94 |
| 2007 | 104 |
| 2008 | 110 |
| 2009 | 113 |
| 2010 | 156 |
| 2011 | 129 |
| 2012 | 138 |
| 2013 | 143 |
| 2014 | 120 |
| 2015 | 126 |
| 2016 | 109 |
| 2017 | 130 |
| 2018 | 87 |
| 2019 | 116 |
| 2020 | 63 |
| 2021 | 23 |
| 2023 | 1 |
| 2024 | 1 |