2021

6.7

2010

8.2

2001

8.4

1968

8.1

2014

8.5

1990

8.5

1995

7.2

1994

8.5

1997

7.9

1989

8.3

2008

7.6

2017

7.3

1994

8.7

2008

7.7

2016

7.9

2013

6.9

2018

7.4

1994

8.5

2002

7.5

1996

7.0