2014

5.4

1987

7.1

2005

6.2

2007

5.3

2000

5.0

2019

6.8

1986

6.7

2007

5.6

2005

7.2

1997

6.6

1992

7.4

1975

5.8

1973

5.7

2004

4.8

2008

5.6

1973

0.0

2012

6.0

1995

6.4

1999

5.5

2022

4.9