2001

7.8

2023

6.3

2021

5.4

2012

7.3

2000

7.6

1994

7.8

1981

5.5

1987

7.3

2016

7.3

1989

6.1

1987

7.7

2015

7.5

1992

8.5

2010

7.9

2011

8.2

1991

4.9

1994

6.0