1999

6.1

2008

5.4

1997

6.8

1999

6.9

1978

5.9

1995

6.4

2000

6.5

1963

7.6

2001

6.9

2024

8.0

2010

2.0

2011

6.9

2019

0.0

2023

8.0

2008

3.8

2001

7.2

1942

7.8

1972

6.0

2006

6.6

2022

7.4