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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1949 | 1 |
| 1951 | 5 |
| 1952 | 14 |
| 1953 | 14 |
| 1954 | 42 |
| 1955 | 31 |
| 1956 | 42 |
| 1957 | 53 |
| 1958 | 42 |
| 1959 | 52 |
| 1960 | 50 |
| 1961 | 56 |
| 1962 | 40 |
| 1964 | 10 |
| 1965 | 85 |
| 1966 | 112 |
| 1967 | 147 |
| 1968 | 163 |
| 1969 | 146 |
| 1970 | 122 |
| 1971 | 137 |
| 1972 | 148 |
| 1973 | 159 |
| 1974 | 157 |
| 1975 | 137 |
| 1976 | 166 |
| 1977 | 142 |
| 1978 | 175 |
| 1979 | 194 |
| 1980 | 220 |
| 1981 | 155 |
| 1982 | 197 |
| 1983 | 166 |
| 1984 | 232 |
| 1985 | 192 |
| 1986 | 194 |
| 1987 | 208 |
| 1988 | 177 |
| 1989 | 226 |
| 1990 | 237 |
| 1991 | 178 |
| 1992 | 152 |
| 1993 | 158 |
| 1994 | 152 |
| 1995 | 157 |
| 1996 | 168 |
| 1997 | 168 |
| 1998 | 181 |
| 1999 | 186 |
| 2000 | 199 |
| 2001 | 189 |
| 2002 | 188 |
| 2003 | 211 |
| 2004 | 199 |
| 2005 | 217 |
| 2006 | 264 |
| 2007 | 249 |
| 2008 | 273 |
| 2009 | 232 |
| 2010 | 297 |
| 2011 | 299 |
| 2012 | 294 |
| 2013 | 357 |
| 2014 | 345 |
| 2015 | 317 |
| 2016 | 347 |
| 2017 | 328 |
| 2018 | 351 |
| 2019 | 298 |
| 2020 | 256 |
| 2021 | 192 |
| 2022 | 128 |
| 2023 | 84 |
| 2024 | 39 |