2017

6.8

2015

8.7

1990

6.2

1998

9.0

1993

6.2

1992

4.2

1986

2.5

2013

6.2

1992

5.5

2021

6.5

1996

3.3

1985

0.0

2000

4.5

2021

7.1

1993

7.0