1958

7.5

1969

9.6

2017

4.5

1978

9.7

2011

7.7

2013

8.6

2020

8.3

2015

6.6

2007

7.6

2000

8.2

2024

8.0

2023

6.7

2019

7.2

2008

6.7

2019

4.6

2003

7.6

1988

6.7

2006

7.6

2003

7.4