1976

8.1

1999

6.8

2001

6.8

2014

7.9

1992

7.5

1991

5.9

2002

7.8

1965

7.2

2007

4.5

1998

7.1

1993

7.7

1997

6.3

2005

5.9

2021

6.8

1994

6.7

1986

8.0

2000

6.1

1996

6.0

1993

7.3

1996

7.3