1976

7.9

2018

8.6

1979

6.9

2000

8.2

2001

8.1

2025

9.1

1998

7.1

2016

8.6

1986

7.7

2002

8.2

1998

7.0

1990

7.6

1997

8.1

2016

7.6

1990

7.4

1991

7.6

2004

8.3

1989

8.4

2021

8.7

2013

7.9