1986

6.9

2000

7.1

2002

6.8

2008

5.5

2014

6.0

1981

7.6

1966

6.3

1980

6.6

2000

0.0

2019

7.7

2009

6.2

1974

6.5

2024

6.3

1976

6.5

2016

8.0

2018

6.2

2021

4.7

2019

6.8

2013

6.2

2014

6.9