1983

7.4

1998

6.2

2023

10.0

2007

6.2

2000

6.7

1986

6.9

1977

6.8

2016

8.1

1999

5.6

1997

7.4

1999

6.3

2021

5.0

2023

7.6

2009

5.6

2016

3.8

2021

7.9

1967

5.8

1988

4.4

1981

6.9

2018

4.0