Years

SDI

SEI

CES

Motorway D1

1949

1.42

0.55

1.198

1988

1.70

0.66

0.373

2007

1.98

0.77

0.476

Motorway D3

1949

0.98

0.41

1.244

1984

0.92

0.38

0.127

2007

1.42

0.54

0.165