1990

9.0

1996

8.0

2018

5.6

1975

5.8

2006

7.8

2005

6.3

2008

6.0

1964

0.0

2001

4.4

1987

6.3

2016

0.0

2008

2.0

2008

1.5

1976

4.7

2009

6.1

2002

5.6

2022

5.0

2015

5.2

2023

0.0

1987

8.6