2003

5.8

2018

7.9

2014

6.5

2013

6.6

2017

6.1

1966

8.2

1990

6.8

1971

7.3

2011

6.3

1984

8.4

1984

7.1

2010

4.1

2015

6.1

2017

4.9

2015

7.6

6.4

1967

6.5

1961

8.0

2018

7.2

2021

9.2