1992

6.8

2015

5.2

2006

6.5

1996

5.9

2023

8.4

1983

4.6

2019

8.5

1988

4.0

1972

4.6

1992

5.6

2020

6.2

2006

6.7

2002

5.6

2022

6.4

1983

6.3

1975

4.9

1974

4.8

2010

6.5

2021

6.8

1993

7.6