2017

5.5

1995

6.3

1993

7.0

1985

7.5

2016

6.4

2004

9.0

2010

7.9

2019

6.9

2018

7.0

2005

6.4

2021

6.6

1995

8.0

1999

7.6

2007

7.3

2007

6.9

1977

6.3

2025

5.8

2005

6.2

1994

6.8

1981

7.1