1997

6.1

2006

4.7

2015

6.2

1965

6.3

2003

5.9

2017

5.7

2020

5.2

2004

0.0

2017

0.0

2002

5.3

1993

6.5

1997

8.0

1999

5.7

1959

7.9

1972

6.2

2003

7.1

2004

7.0

2006

5.5

2023

0.0

2014

6.5