1986

5.8

6.6

2003

6.3

1993

6.1

2022

6.2

1977

5.9

1968

6.9

2013

6.2

2013

6.1

6.5

2020

6.8

2008

5.7

2023

6.8

2015

4.6

2004

7.1

2001

6.3

2023

6.0

1977

6.0

1985

6.7

2013

5.8