2021

7.0

2016

6.5

1995

5.6

2013

6.7

2000

6.8

1996

5.9

2008

7.5

2004

7.1

2012

8.2

1989

5.5

1955

7.2

2018

4.6

2020

6.0

2001

6.8

1989

6.2

2019

7.0

2015

5.1

2013

6.2

1971

6.1

2017

6.0