← All namesIris
Raw counts
| Year | Count |
|---|
| 1910 | 118 |
| 1911 | 203 |
| 1912 | 232 |
| 1913 | 378 |
| 1914 | 528 |
| 1914 | 6 |
| 1915 | 741 |
| 1916 | 769 |
| 1917 | 810 |
| 1918 | 865 |
| 1919 | 859 |
| 1920 | 799 |
| 1921 | 862 |
| 1922 | 807 |
| 1923 | 1,078 |
| 1924 | 1,092 |
| 1925 | 1,469 |
| 1926 | 1,539 |
| 1927 | 1,612 |
| 1928 | 1,678 |
| 1929 | 1,546 |
| 1930 | 1,466 |
| 1931 | 1,313 |
| 1932 | 1,293 |
| 1933 | 1,168 |
| 1934 | 1,162 |
| 1934 | 5 |
| 1935 | 1,173 |
| 1936 | 1,141 |
| 1937 | 1,113 |
| 1938 | 1,050 |
| 1939 | 931 |
| 1940 | 936 |
| 1941 | 845 |
| 1942 | 833 |
| 1943 | 884 |
| 1944 | 765 |
| 1945 | 688 |
| 1946 | 889 |
| 1947 | 999 |
| 1948 | 1,087 |
| 1949 | 1,057 |
| 1950 | 1,176 |
| 1951 | 1,175 |
| 1952 | 1,204 |
| 1953 | 1,148 |
| 1954 | 972 |
| 1955 | 1,093 |
| 1956 | 1,234 |
| 1957 | 1,273 |
| 1958 | 1,132 |
| 1959 | 1,076 |
| 1960 | 1,070 |
| 1961 | 972 |
| 1962 | 679 |
| 1963 | 589 |
| 1964 | 581 |
| 1965 | 559 |
| 1966 | 465 |
| 1967 | 487 |
| 1968 | 679 |
| 1969 | 737 |
| 1970 | 765 |
| 1971 | 594 |
| 1972 | 460 |
| 1973 | 569 |
| 1974 | 402 |
| 1975 | 415 |
| 1976 | 406 |
| 1977 | 405 |
| 1978 | 483 |
| 1979 | 556 |
| 1980 | 534 |
| 1981 | 450 |
| 1982 | 431 |
| 1983 | 344 |
| 1984 | 404 |
| 1985 | 424 |
| 1986 | 467 |
| 1987 | 436 |
| 1988 | 454 |
| 1989 | 594 |
| 1990 | 323 |
| 1991 | 463 |
| 1992 | 330 |
| 1993 | 332 |
| 1994 | 339 |
| 1995 | 274 |
| 1996 | 353 |
| 1997 | 385 |
| 1998 | 500 |
| 1999 | 461 |
| 2000 | 409 |
| 2001 | 462 |
| 2002 | 495 |
| 2003 | 563 |
| 2004 | 883 |
| 2005 | 992 |
| 2006 | 823 |
| 2007 | 1,045 |
| 2008 | 971 |
| 2009 | 848 |
| 2010 | 841 |
| 2011 | 1,011 |
| 2012 | 1,163 |
| 2013 | 1,171 |
| 2014 | 1,173 |
| 2015 | 1,582 |
| 2016 | 1,942 |
| 2017 | 2,267 |
| 2018 | 2,365 |
| 2019 | 2,410 |
| 2020 | 2,340 |
| 2021 | 2,935 |
| 2022 | 3,444 |
| 2023 | 3,409 |
| 2024 | 3,581 |