1999

6.2

1968

4.9

1965

6.8

1967

6.7

1978

7.1

2004

6.0

1971

7.0

1990

6.7

2005

5.8

2002

5.3

1982

0.0

2023

0.0

1980

7.9

2000

6.3

1998

2.9

2022

6.1

1952

7.3

2001

5.9

1977

5.6

2020

6.3