2013

7.6

1990

7.5

1997

7.4

2004

7.9

1989

7.8

2015

6.7

2004

7.1

2021

7.7

2013

6.5

1993

6.1

1992

8.1

2008

6.1

1975

8.4

7.8

2007

5.7

2008

5.8

2014

6.8

1998

6.0

1995

5.2

1994

8.5