1998

6.0

2002

4.6

2019

5.6

2009

6.7

2013

6.5

2012

9.7

1957

6.9

2013

8.3

2012

9.4

2012

8.3

1968

6.9

1990

4.4

1988

6.2

2011

7.4

1964

7.4

2021

7.7

2023

9.3

2007

10.0

1989

5.8

1990

5.8