2006

6.6

1978

7.5

2004

7.1

2019

5.6

2018

5.0

2019

4.1

2021

6.8

2009

6.1

1999

4.1

1990

5.3

1996

5.4

1986

4.1

1988

3.8

1992

5.1

2014

3.9

1985

4.7

1996

5.8

2013

3.5

2018

3.8

1993

4.2