1998

6.6

1971

7.4

2000

7.4

1991

6.6

2007

6.8

2018

4.9

2017

6.4

1983

6.7

1961

8.1

1997

7.1

1973

7.1

1978

8.0

2018

5.8

2019

0.0

2010

6.5

2016

4.7

2022

2.5

2018

5.5

1990

6.7

1956

5.1