1992

6.8

2015

7.0

2012

6.9

1989

8.3

1995

6.2

2009

7.9

2024

7.2

1979

8.3

1983

7.0

1991

7.9

2019

7.3

1993

7.0

2001

6.8

1990

7.8

2000

8.4

2011

7.5

2019

7.3

2000

7.5

2012

5.0

1997

7.2