2004

8.6

1990

7.4

1998

7.2

2009

7.0

1993

6.6

2015

6.8

2015

7.1

2022

7.7

1997

8.1

1997

8.3

1975

8.3

2010

8.1

1996

5.4

1989

5.9

2014

7.5

2004

8.3

2015

7.0

2007

8.0

2003

8.2

2009

7.0