1988

7.4

1993

6.5

2020

6.7

1994

7.2

1982

6.3

2012

5.3

2018

7.1

2018

8.2

2022

9.0

1982

4.8

1997

6.4

2021

6.6

2004

6.8

1996

5.3

1992

4.7

1977

6.8

1999

7.9

1998

7.8

1998

7.1

2000

6.9