1977

8.6

1969

9.6

1990

8.8

1968

9.8

1974

9.5

1975

8.0

2024

7.0

2018

10.0

2010

5.5

2011

6.3

2024

5.5

1998

8.0

2006

6.0

2020

10.0

2016

5.3

2009

5.9

2019

8.0

2015

6.0