1971

7.6

1993

7.1

2001

5.0

1991

7.8

2014

7.0

2021

8.2

2000

6.5

1974

7.9

2003

7.6

2013

7.3

2014

7.1

2025

9.4

1999

7.2

1989

8.1

1968

0.0

1979

7.0

2019

6.8

2006

0.0

2012

7.6

1976

6.0