2021

6.4

1989

7.8

2014

8.5

2016

6.8

2005

7.7

2006

7.9

2018

8.2

2017

7.6

1991

8.3

1983

8.2

1990

7.5

1989

7.8

2007

7.4

2000

7.6

2009

8.0

2016

5.7

2012

8.2

1968

8.1

1980

8.4

1984

7.1