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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1971 | 31 |
| 1972 | 44 |
| 1973 | 43 |
| 1974 | 50 |
| 1975 | 58 |
| 1976 | 52 |
| 1977 | 82 |
| 1978 | 106 |
| 1979 | 98 |
| 1980 | 93 |
| 1981 | 118 |
| 1982 | 96 |
| 1983 | 100 |
| 1984 | 121 |
| 1985 | 112 |
| 1986 | 144 |
| 1987 | 109 |
| 1988 | 109 |
| 1989 | 99 |
| 1990 | 90 |
| 1991 | 93 |
| 1992 | 85 |
| 1993 | 77 |
| 1994 | 114 |
| 1995 | 114 |
| 1996 | 111 |
| 1997 | 82 |
| 1998 | 72 |
| 1999 | 92 |
| 2000 | 105 |
| 2001 | 105 |
| 2002 | 108 |
| 2003 | 102 |
| 2004 | 101 |
| 2005 | 111 |
| 2006 | 136 |
| 2007 | 139 |
| 2008 | 132 |
| 2009 | 176 |
| 2010 | 257 |
| 2011 | 234 |
| 2012 | 220 |
| 2013 | 231 |
| 2014 | 225 |
| 2015 | 220 |
| 2016 | 194 |
| 2017 | 147 |
| 2018 | 153 |
| 2019 | 140 |
| 2020 | 144 |
| 2021 | 157 |
| 2022 | 137 |
| 2023 | 140 |
| 2024 | 147 |
| 2025 | 74 |