1995

7.7

1969

5.8

2019

5.4

1976

8.0

2015

5.1

2013

8.3

2014

7.4

2021

6.2

2018

4.0

2014

6.0

1992

3.6

7.8

4.0

2007

3.5

1967

5.6

2010

5.2

7.8

2006

4.2

1992

7.1