← All namesPerla
Raw counts
| Year | Count |
|---|
| 1931 | 10 |
| 1952 | 7 |
| 1953 | 10 |
| 1954 | 10 |
| 1956 | 7 |
| 1957 | 7 |
| 1958 | 10 |
| 1959 | 9 |
| 1960 | 11 |
| 1961 | 10 |
| 1967 | 12 |
| 1968 | 15 |
| 1969 | 11 |
| 1970 | 12 |
| 1971 | 24 |
| 1972 | 28 |
| 1973 | 27 |
| 1974 | 45 |
| 1975 | 31 |
| 1976 | 47 |
| 1977 | 63 |
| 1978 | 48 |
| 1979 | 66 |
| 1980 | 97 |
| 1981 | 87 |
| 1982 | 81 |
| 1983 | 101 |
| 1984 | 89 |
| 1985 | 105 |
| 1986 | 218 |
| 1987 | 213 |
| 1988 | 212 |
| 1989 | 212 |
| 1990 | 57 |
| 1991 | 112 |
| 1992 | 139 |
| 1993 | 138 |
| 1994 | 169 |
| 1995 | 188 |
| 1996 | 336 |
| 1997 | 293 |
| 1998 | 361 |
| 1999 | 194 |
| 2000 | 205 |
| 2001 | 249 |
| 2002 | 393 |
| 2003 | 635 |
| 2004 | 942 |
| 2005 | 873 |
| 2006 | 742 |
| 2007 | 709 |
| 2008 | 555 |
| 2009 | 355 |
| 2010 | 336 |
| 2011 | 357 |
| 2012 | 665 |
| 2013 | 290 |
| 2014 | 304 |
| 2015 | 380 |
| 2016 | 327 |
| 2017 | 337 |
| 2018 | 221 |
| 2019 | 153 |
| 2020 | 198 |
| 2021 | 156 |
| 2022 | 158 |
| 2023 | 148 |
| 2024 | 149 |