2004

7.3

1990

5.8

1986

6.4

2017

6.8

2007

6.7

2021

6.2

2001

6.2

1982

6.6

2019

3.6

1976

7.5

2005

6.5

1995

6.9

2023

9.2

2000

5.2

1997

6.8

6.4

1968

6.5

1988

6.2

2000

7.2

2015

7.0