1991

8.3

1984

7.3

2007

5.9

2003

7.1

2018

5.0

2020

6.0

2019

7.0

2022

4.3

1950

6.6

2022

0.0

2007

6.2

2006

5.9

1990

7.7

1999

4.5

1972

4.7

2018

7.0

1998

7.1

2002

6.7

2002

6.9

2021

5.0