1979

6.0

2020

7.4

1970

7.8

2006

6.9

1988

7.2

2001

7.2

2000

2.0

1982

8.1

1999

8.8

2016

6.2

1987

6.5

2005

7.1

2017

6.4

1959

0.0

2023

7.1

2017

7.0

1993

9.0

2022

7.0

2017

7.2

2017

7.3