2021

8.4

2019

7.1

5.8

1998

7.2

2002

7.5

2007

7.5

1980

6.3

2015

8.1

1998

8.2

1987

7.0

1987

6.2

2020

6.0

1976

9.5

2015

7.1

2016

7.8

2021

6.0

7.0

2013

6.7

1977

9.0

2022

6.0