Maintenance & Optimization
4.4
3.1
3.6
4.0
3.8
4.6
2.5
3.2
4.1
4.7
4.2
2.8
1.6
2.7
3.4
4.9
1.3
3.9
3.3
2.0
1.8
3.0
2.2
5.0
4.5
2.4
4.8
2.1
4.3
