2015

4.6

2017

6.8

2018

4.3

2018

1.0

2023

0.0

1999

4.0

1992

4.2

1970

3.0

2013

4.4

2002

3.6

1976

2.3

1976

5.0

2007

6.6

1979

5.5

1972

5.1

1972

3.0

2021

6.6

1982

3.2

1977

4.6

1985

4.9