2009

7.5

6.6

2024

7.2

2020

6.1

2023

6.8

6.6

2015

6.4

1972

6.3

1985

6.1

1972

6.6

7.0

1985

6.8

2020

6.4

2010

6.8

2011

9.1

2015

6.6

2024

6.0

1989

5.9

1966

6.1

2018

6.3