1989

5.8

2011

7.3

1989

6.2

2002

9.1

2014

4.5

2004

9.5

2002

10.0

1991

6.5

1964

7.4

2009

5.7

2015

9.0

2013

8.1

2012

9.4

1971

7.7

2014

7.7

2024

5.3

2017

4.6

1996

6.6