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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1956 | 1 |
| 1961 | 1 |
| 1965 | 1 |
| 1966 | 1 |
| 1974 | 1 |
| 1976 | 1 |
| 1977 | 1 |
| 1978 | 10 |
| 1979 | 20 |
| 1980 | 23 |
| 1981 | 15 |
| 1982 | 20 |
| 1983 | 30 |
| 1984 | 45 |
| 1985 | 31 |
| 1986 | 28 |
| 1987 | 35 |
| 1988 | 38 |
| 1989 | 29 |
| 1990 | 55 |
| 1991 | 49 |
| 1992 | 58 |
| 1993 | 59 |
| 1994 | 58 |
| 1995 | 64 |
| 1996 | 78 |
| 1997 | 79 |
| 1998 | 98 |
| 1999 | 86 |
| 2000 | 80 |
| 2001 | 92 |
| 2002 | 74 |
| 2003 | 110 |
| 2004 | 92 |
| 2005 | 110 |
| 2006 | 101 |
| 2007 | 128 |
| 2008 | 136 |
| 2009 | 164 |
| 2010 | 150 |
| 2011 | 190 |
| 2012 | 181 |
| 2013 | 190 |
| 2014 | 183 |
| 2015 | 249 |
| 2016 | 206 |
| 2017 | 218 |
| 2018 | 249 |
| 2019 | 227 |
| 2020 | 157 |
| 2021 | 112 |
| 2022 | 18 |
| 2023 | 11 |
| 2024 | 7 |