2001

6.1

2000

6.3

1968

4.9

1965

6.8

1967

6.7

1972

6.2

1997

6.2

1969

6.4

2003

6.8

2005

5.4

1990

6.1

2003

7.0

1999

6.7

2024

6.5

2017

7.3

1985

7.6

2006

5.9

1992

5.4

2003

6.8

2019

6.6