1984

7.2

2009

6.2

2021

6.7

2015

6.1

2012

6.0

2020

6.7

1997

4.6

1965

7.1

5.7

1984

6.6

2012

4.5

2003

5.3

2002

9.1

2016

6.7

1986

7.1

1955

6.9

1993

6.5

1998

6.2