1993

6.1

1992

5.7

1996

6.6

2008

5.7

1995

5.6

1988

6.5

2015

5.1

2019

8.7

1953

7.2

2020

7.4

2010

6.4

1987

6.2

1996

6.5

2010

5.9

2005

6.9

2025

10.0

2015

6.5

1985

6.1

2013

6.2

2010

5.8