1998

6.4

2012

9.3

2000

9.4

1998

6.2

2002

6.6

2015

7.3

1992

6.2

2005

5.1

2011

7.2

2024

6.3

1997

5.9

1996

8.0

1967

7.1

2014

5.1

2024

5.0

1980

7.7

2000

6.9

2020

6.0

2013

7.5

2012

6.6