Table:
direct tax thresholds
indirect tax thresholds

second federal tax
second provincial/ territorial tax
third federal tax
third provincial/ territorial tax
fourth federal tax
old age security recovery tax
employment insurance recovery tax

percent

by time period

2001 to 2012
6.097
3.430
3.893
2.475
2.652
8.434
17.340

2001 to 2006
6.853
3.861
4.213
2.206
2.927
8.983
16.440

2007 to 2012
5.369
2.987
3.685
2.567
2.656
7.907
17.770

by year

2001
6.937
6.849
4.753
3.636
2.534
9.395
19.450

2002
6.927
5.731
4.411
3.031
2.516
9.125
19.160

2003
6.598
5.541
4.696
2.930
2.714
9.133
18.010

2004
5.256
1.959
4.735
1.960
3.140
9.159
15.570

2005
7.865
1.525
7.704
0.830
3.008
8.521
13.870

2006
7.547
2.104
-0.689
1.682
2.840
9.296
15.090

2007
5.552
3.460
3.375
4.531
2.461
8.044
17.120

2008
4.461
5.500
6.411
5.838
2.665
9.849
17.540

2009
5.919
3.332
3.996
-0.561
2.777
7.790
18.830

2010
6.063
2.763
1.876
0.691
2.990
8.256
17.800

2011
5.866
1.875
3.094
3.973
2.921
6.810
16.950

2012
4.353
0.606
3.288
0.914
2.190
7.218
18.000

Statement: the rd estimates of the changes in effective marginal tax rates are 2.652% for the fourth bracket from 2001 to 2012.
Question: what are the rd estimates of the changes in effective marginal tax rates for the fourth bracket from 2001 to 2012?
Answer: [2.652]