- 1949 to 1949 1
- 1950 to 1954 14
- 1955 to 1959 6
- 1960 to 1964 5
- 1965 to 1969 5
- 1970 to 1974 14
- 1975 to 1979 31
- 1980 to 1984 79
- 1985 to 1989 125
- 1990 to 1994 380
- 1995 to 1999 701
- 2000 to 2004 1,833
- 2005 to 2009 2,089
- 2010 to 2014 2,427
- 2015 to 2019 904
- 2020 to 2020 30