1962

6.9

1985

7.1

2016

7.3

1991

4.9

2007

6.7

2023

4.5

1998

7.1

2018

5.8

1978

5.8

1988

5.6

2007

6.6

2002

6.6

2004

6.4

1954

7.6

1955

6.0

1973

5.8

1981

3.3

2000

7.3

2003

5.0

2012

6.8