2013

6.4

2006

5.8

2015

6.5

1993

6.1

2003

6.3

2021

6.8

7.2

2020

7.3

1988

5.9

1967

5.7

2023

6.6

1993

7.6

2023

6.2

6.7

1999

7.4

8.0

1968

8.2

2001

6.2