1988

6.7

2021

10.0

2010

6.4

1997

6.1

1998

6.0

2014

6.5

1990

7.0

2010

7.5

2014

7.8

1998

7.4

2007

4.9

2023

6.9

2014

6.5

2008

6.0

1998

6.6

2024

6.0

6.6

1964

5.0

1989

5.5