2008

4.7

1986

5.8

2021

7.5

2012

5.4

2003

5.7

1971

6.6

1989

5.9

2020

6.7

2002

5.2

2018

6.0

1984

5.4

2012

6.5

1998

6.8

2015

7.3

2017

7.3

2014

6.5

1996

8.2

2014

7.6

1971

6.4

2013

7.6