1999

6.1

1994

7.3

2000

7.5

1997

6.0

1983

7.3

1995

6.9

1994

6.8

2009

7.3

1991

6.4

2002

6.1

1996

6.8

1966

7.0

2001

6.6

2022

6.6

2021

5.1

2013

5.6

2016

4.6

2017

6.3

2018

5.2

2022

6.8