- 1948 to 1949 1
- 1950 to 1954 3,753
- 1955 to 1959 3,949
- 1960 to 1964 4,480
- 1965 to 1969 5,542
- 1970 to 1974 6,785
- 1975 to 1979 7,204
- 1980 to 1984 4,587
- 1985 to 1989 4,873
- 1990 to 1994 3,844
- 1995 to 1999 32
- 2000 to 2004 33
- 2005 to 2009 8
- 2010 to 2014 0
- 2015 to 2019 5