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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 2 |
| 1952 | 14 |
| 1953 | 11 |
| 1954 | 11 |
| 1955 | 19 |
| 1956 | 36 |
| 1957 | 54 |
| 1958 | 64 |
| 1959 | 39 |
| 1960 | 47 |
| 1961 | 50 |
| 1962 | 37 |
| 1964 | 1 |
| 1965 | 31 |
| 1966 | 74 |
| 1967 | 127 |
| 1968 | 124 |
| 1969 | 114 |
| 1970 | 105 |
| 1971 | 112 |
| 1972 | 180 |
| 1973 | 128 |
| 1974 | 143 |
| 1975 | 155 |
| 1976 | 135 |
| 1977 | 146 |
| 1978 | 134 |
| 1979 | 130 |
| 1980 | 145 |
| 1981 | 162 |
| 1982 | 140 |
| 1983 | 151 |
| 1984 | 134 |
| 1985 | 160 |
| 1986 | 161 |
| 1987 | 159 |
| 1988 | 151 |
| 1989 | 174 |
| 1990 | 158 |
| 1991 | 156 |
| 1992 | 133 |
| 1993 | 142 |
| 1994 | 136 |
| 1995 | 157 |
| 1996 | 152 |
| 1997 | 180 |
| 1998 | 175 |
| 1999 | 169 |
| 2000 | 231 |
| 2001 | 226 |
| 2002 | 209 |
| 2003 | 222 |
| 2004 | 269 |
| 2005 | 314 |
| 2006 | 340 |
| 2007 | 339 |
| 2008 | 326 |
| 2009 | 392 |
| 2010 | 401 |
| 2011 | 428 |
| 2012 | 487 |
| 2013 | 543 |
| 2014 | 518 |
| 2015 | 545 |
| 2016 | 473 |
| 2017 | 445 |
| 2018 | 457 |
| 2019 | 498 |
| 2020 | 420 |
| 2021 | 356 |
| 2022 | 383 |
| 2023 | 302 |
| 2024 | 94 |