1959

8.2

2016

6.8

1989

5.4

1972

10.0

1960

6.7

1970

7.4

2000

5.5

1997

6.5

2009

8.5

1962

6.8

1999

7.2

2017

6.0

2009

8.8

2015

8.1

2023

9.3

2018

8.0

2015

6.3

2001

5.8

1947

6.6

2018

6.9