1951

6.3

1949

6.8

1949

6.4

1998

6.9

1953

7.4

2008

6.2

2009

5.9

2015

5.7

1957

6.4

1946

5.6

1948

6.7

1944

6.1

1947

6.8

1946

5.6

1945

6.4

1937

7.2

1952

6.2

1952

5.8

1951

6.7

2017

6.9