2014

3.2

1996

6.4

1997

6.6

2011

8.1

1994

8.0

1997

7.2

2005

8.2

2006

7.1

2000

7.9

2020

6.3

2016

7.3

2018

7.6

2020

6.7

2013

7.3

1994

6.5

2009

7.5

1986

4.4

2021

5.0

1999

6.5

1995

6.5

2005

3.0