1998

6.2

1971

7.1

1991

5.2

2022

5.8

1994

6.6

2018

6.5

1992

6.3

2016

5.6

2015

7.0

1993

5.6

2010

6.6

1988

5.4

1965

8.1

2023

7.6

2012

5.7

2010

5.0

2021

5.4

1986

6.2

2023

5.8