2001

6.9

1991

7.5

2017

6.6

2008

6.3

1988

8.4

2002

7.0

1992

7.4

2009

6.7

2019

6.5

1976

7.1

1973

7.8

2005

3.5

2009

8.2

2008

6.8

2019

10.0

1962

7.2

0.0

2000

5.0

2020

8.0

1952

7.3