2009

7.6

1985

6.9

2014

6.8

1970

7.7

2015

6.5

1986

6.2

2018

6.3

2005

5.2

1990

4.4

2007

9.8

1980

6.4

1990

6.2

1989

6.2

2019

7.0

1995

7.8

1985

5.5

2017

6.6

2012

8.2

1981

5.5

2006

5.7