2017

3.9

1987

5.0

1993

6.6

2007

6.7

2001

6.8

1998

7.2

2009

7.8

2015

7.0

2005

7.0

2001

5.5

2008

5.0

1965

6.0

1997

6.0

2021

6.0

2002

8.7

2012

8.0

2020

8.4

1986

8.0

2013

6.6

2005

7.5