2017

3.5

1995

6.0

1981

6.3

2006

7.0

2007

6.2

2018

6.9

1986

6.1

2003

6.1

2004

7.1

1999

6.3

2017

4.5

1996

6.0

1997

1.0

1977

6.8

2020

4.6

2018

7.2

2005

6.8

2024

7.2

2017

6.9

2018

7.1