1986

8.0

2011

4.7

2013

8.1

2019

9.1

1998

9.3

2021

7.5

1976

7.9

1973

6.8

2009

6.3

2017

7.3

1973

7.3

1990

7.8

2004

8.3

2014

7.0

2022

5.8

2004

7.9

2006

8.3

2013

7.4

2003

8.5

2000

4.3