Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1913 | 1 |
| 1915 | 1 |
| 1923 | 1 |
| 1924 | 2 |
| 1925 | 2 |
| 1926 | 2 |
| 1927 | 1 |
| 1928 | 2 |
| 1929 | 4 |
| 1930 | 1 |
| 1931 | 6 |
| 1932 | 5 |
| 1933 | 2 |
| 1935 | 2 |
| 1936 | 3 |
| 1937 | 3 |
| 1938 | 2 |
| 1939 | 2 |
| 1940 | 1 |
| 1941 | 5 |
| 1942 | 1 |
| 1943 | 2 |
| 1945 | 4 |
| 1946 | 2 |
| 1947 | 4 |
| 1948 | 4 |
| 1949 | 2 |
| 1950 | 6 |
| 1951 | 6 |
| 1952 | 6 |
| 1953 | 3 |
| 1954 | 10 |
| 1955 | 2 |
| 1956 | 13 |
| 1957 | 12 |
| 1958 | 19 |
| 1959 | 16 |
| 1960 | 10 |
| 1961 | 12 |
| 1962 | 25 |
| 1963 | 21 |
| 1964 | 25 |
| 1965 | 31 |
| 1966 | 20 |
| 1967 | 30 |
| 1968 | 27 |
| 1969 | 38 |
| 1970 | 51 |
| 1971 | 45 |
| 1972 | 51 |
| 1973 | 68 |
| 1974 | 67 |
| 1975 | 78 |
| 1976 | 91 |
| 1977 | 89 |
| 1978 | 82 |
| 1979 | 116 |
| 1980 | 109 |
| 1981 | 111 |
| 1982 | 122 |
| 1983 | 114 |
| 1984 | 135 |
| 1985 | 140 |
| 1986 | 119 |
| 1987 | 123 |
| 1988 | 141 |
| 1989 | 114 |
| 1990 | 167 |
| 1991 | 171 |
| 1992 | 129 |
| 1993 | 159 |
| 1994 | 158 |
| 1995 | 161 |
| 1996 | 171 |
| 1997 | 173 |
| 1998 | 207 |
| 1999 | 216 |
| 2000 | 220 |
| 2001 | 252 |
| 2002 | 289 |
| 2003 | 290 |
| 2004 | 305 |
| 2005 | 387 |
| 2006 | 355 |
| 2007 | 433 |
| 2008 | 448 |
| 2009 | 569 |
| 2010 | 664 |
| 2011 | 781 |
| 2012 | 868 |
| 2013 | 888 |
| 2014 | 1028 |
| 2015 | 1111 |
| 2016 | 1155 |
| 2017 | 1104 |
| 2018 | 1137 |
| 2019 | 1226 |
| 2020 | 1512 |
| 2021 | 1022 |