1968

6.9

2023

9.1

1995

5.9

1995

7.3

1981

5.8

1983

7.9

1990

7.0

1955

7.2

2010

6.3

2000

7.3

2013

7.2

2011

6.4

2003

6.8

1983

5.5

1986

6.9

1983

7.3

1996

6.6

2008

7.8

2013

6.6

1997

7.4