1991

7.4

2015

5.4

2009

7.5

2000

5.8

2002

4.8

2002

5.5

2000

2.7

1987

5.1

2023

6.2

1977

5.9

2001

3.3

1999

4.9

1977

3.9

2018

4.8

2013

4.4

2020

0.0

1979

6.2

2019

6.2

2016

6.3

2016

4.0