2021

6.3

2006

8.3

2015

7.5

2017

6.6

2019

7.5

2004

8.0

2002

7.7

2009

7.4

2004

8.4

1967

7.5

1998

8.5

1998

5.9

2001

5.0

1980

7.5

1985

6.8

1991

7.3

1993

6.3

1968

6.7

2007

5.7

1976

6.7