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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 32 |
| 1968 | 52 |
| 1969 | 61 |
| 1970 | 47 |
| 1971 | 5 |
| 1972 | 86 |
| 1973 | 104 |
| 1974 | 117 |
| 1975 | 121 |
| 1976 | 151 |
| 1977 | 197 |
| 1978 | 178 |
| 1979 | 227 |
| 1980 | 230 |
| 1981 | 213 |
| 1982 | 219 |
| 1983 | 217 |
| 1984 | 297 |
| 1985 | 260 |
| 1986 | 257 |
| 1987 | 258 |
| 1988 | 261 |
| 1989 | 245 |
| 1990 | 253 |
| 1991 | 235 |
| 1992 | 260 |
| 1993 | 296 |
| 1994 | 253 |
| 1995 | 280 |
| 1996 | 307 |
| 1997 | 268 |
| 1998 | 266 |
| 1999 | 254 |
| 2000 | 281 |
| 2001 | 258 |
| 2002 | 271 |
| 2003 | 352 |
| 2004 | 354 |
| 2005 | 379 |
| 2006 | 309 |
| 2007 | 287 |
| 2008 | 247 |
| 2009 | 263 |
| 2010 | 209 |
| 2011 | 240 |
| 2012 | 260 |
| 2013 | 300 |
| 2014 | 264 |
| 2015 | 328 |
| 2016 | 357 |
| 2017 | 381 |
| 2018 | 419 |
| 2019 | 533 |
| 2020 | 748 |
| 2021 | 896 |
| 2022 | 908 |
| 2023 | 689 |