1970

6.5

1972

5.9

1979

5.6

2015

6.6

2019

5.1

2023

9.5

1966

5.2

2022

6.9

1952

6.3

2008

3.7

2003

6.9

1961

7.5

1977

6.3

1977

5.8

1953

6.2

2005

6.9

1998

7.1

1987

6.9

1978

6.7

1954

6.8