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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 2 |
| 1966 | 2 |
| 1967 | 1 |
| 1969 | 1 |
| 1970 | 2 |
| 1971 | 1 |
| 1974 | 1 |
| 1975 | 2 |
| 1976 | 1 |
| 1977 | 1 |
| 1978 | 2 |
| 1979 | 4 |
| 1980 | 17 |
| 1981 | 50 |
| 1982 | 41 |
| 1983 | 53 |
| 1984 | 57 |
| 1985 | 62 |
| 1986 | 96 |
| 1987 | 102 |
| 1988 | 124 |
| 1989 | 118 |
| 1990 | 150 |
| 1991 | 141 |
| 1992 | 179 |
| 1993 | 175 |
| 1994 | 158 |
| 1995 | 214 |
| 1996 | 196 |
| 1997 | 244 |
| 1998 | 259 |
| 1999 | 325 |
| 2000 | 375 |
| 2001 | 485 |
| 2002 | 565 |
| 2003 | 649 |
| 2004 | 777 |
| 2005 | 1023 |
| 2006 | 1164 |
| 2007 | 1518 |
| 2008 | 2193 |
| 2009 | 2391 |
| 2010 | 2844 |
| 2011 | 3026 |
| 2012 | 3061 |
| 2013 | 3138 |
| 2014 | 3195 |
| 2015 | 3153 |
| 2016 | 3100 |
| 2017 | 3052 |
| 2018 | 2989 |
| 2019 | 3110 |
| 2020 | 3281 |
| 2021 | 3560 |
| 2022 | 3188 |
| 2023 | 3203 |
| 2024 | 1652 |
| 2025 | 1 |