2000

7.0

2006

7.6

1997

6.1

1995

2.0

1991

7.7

1980

6.4

1988

3.0

2021

6.3

2015

7.5

2023

7.8

1992

7.1

2022

4.8

1971

5.5

2018

2.7

1999

6.8

1997

6.8

2020

6.2

2023

6.9

1993

4.8

2024

5.5