← All namesDirk
Raw counts
| Year | Count |
|---|
| 1925 | 5 |
| 1930 | 5 |
| 1938 | 5 |
| 1942 | 5 |
| 1944 | 15 |
| 1947 | 11 |
| 1948 | 5 |
| 1949 | 37 |
| 1950 | 62 |
| 1951 | 74 |
| 1952 | 43 |
| 1953 | 103 |
| 1954 | 402 |
| 1955 | 467 |
| 1956 | 423 |
| 1957 | 396 |
| 1958 | 323 |
| 1959 | 402 |
| 1960 | 397 |
| 1961 | 377 |
| 1962 | 329 |
| 1963 | 361 |
| 1964 | 321 |
| 1965 | 288 |
| 1966 | 236 |
| 1967 | 340 |
| 1968 | 331 |
| 1969 | 337 |
| 1970 | 337 |
| 1971 | 250 |
| 1972 | 106 |
| 1973 | 110 |
| 1974 | 166 |
| 1975 | 113 |
| 1976 | 121 |
| 1977 | 75 |
| 1978 | 66 |
| 1979 | 166 |
| 1980 | 110 |
| 1981 | 79 |
| 1982 | 46 |
| 1983 | 83 |
| 1984 | 71 |
| 1985 | 64 |
| 1986 | 37 |
| 1987 | 44 |
| 1988 | 44 |
| 1989 | 57 |
| 1990 | 27 |
| 1991 | 15 |
| 1992 | 20 |
| 1993 | 43 |
| 1994 | 5 |
| 1995 | 17 |
| 1996 | 8 |
| 2000 | 14 |
| 2001 | 10 |
| 2005 | 10 |
| 2007 | 5 |
| 2014 | 10 |
| 2023 | 6 |