1998

5.5

2021

9.2

6.4

2010

7.9

2001

4.7

1968

6.0

2014

6.9

2013

7.8

2017

0.0

2016

8.0

2020

4.0

2007

6.5

1998

8.4

1976

7.2

1985

5.0

2007

9.0

2014

7.0