2004

4.8

1984

6.7

1990

6.8

1994

7.4

1958

8.2

1995

7.2

2009

5.3

2016

7.5

2006

5.7

2009

6.8

1990

5.9

2011

5.4

2018

6.2

1998

4.8

2009

6.8

2014

5.4

2016

7.3

2020

7.2

2013

5.0

1973

7.8