1988

7.0

5.0

1999

7.2

2021

6.2

2006

6.1

2018

6.9

1987

5.3

1989

6.2

1975

4.5

2008

6.8

2020

9.5

2011

7.2

2018

7.0

2003

6.2

2015

6.4

1981

7.2

2020

10.0

2010

6.8

1981

5.1