1998

7.1

1990

7.0

2004

8.6

2018

8.3

2002

7.9

5.8

1979

6.9

2004

8.3

2020

9.8

2002

7.7

2025

9.1

1998

7.2

2000

8.2

1985

7.9

1992

5.9

2007

7.7

2017

7.8

2005

8.0

1991

7.4

1988

6.7