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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1971 | 1 |
| 1972 | 5 |
| 1973 | 17 |
| 1974 | 35 |
| 1975 | 29 |
| 1976 | 33 |
| 1977 | 19 |
| 1978 | 20 |
| 1979 | 31 |
| 1980 | 15 |
| 1981 | 14 |
| 1982 | 14 |
| 1983 | 23 |
| 1984 | 15 |
| 1985 | 24 |
| 1986 | 23 |
| 1987 | 24 |
| 1988 | 17 |
| 1989 | 39 |
| 1990 | 40 |
| 1991 | 26 |
| 1992 | 39 |
| 1993 | 42 |
| 1994 | 47 |
| 1995 | 50 |
| 1996 | 61 |
| 1997 | 69 |
| 1998 | 74 |
| 1999 | 62 |
| 2000 | 68 |
| 2001 | 66 |
| 2002 | 53 |
| 2003 | 81 |
| 2004 | 85 |
| 2005 | 96 |
| 2006 | 117 |
| 2007 | 112 |
| 2008 | 156 |
| 2009 | 138 |
| 2010 | 178 |
| 2011 | 148 |
| 2012 | 166 |
| 2013 | 157 |
| 2014 | 160 |
| 2015 | 146 |
| 2016 | 178 |
| 2017 | 158 |
| 2018 | 115 |
| 2019 | 74 |
| 2020 | 78 |
| 2021 | 69 |
| 2022 | 100 |
| 2023 | 91 |
| 2024 | 90 |
| 2025 | 64 |
| 2026 | 51 |