2007

7.5

2000

5.2

2015

6.9

1996

6.2

2016

7.0

2008

6.8

2001

8.9

2011

9.5

1994

7.3

1984

9.2

2019

7.7

2019

7.7

2021

6.1

1987

7.1

2018

8.3

1986

7.0

2010

7.7

2014

6.7

2006

6.2

2005

5.8