Historical data for tax-rates is provided for your convenience. Excel version of this data can be downloaded as well. 
Tax YearFiscal YearM&O Tax RateI&S Tax RateTotal Tax RateChange from Previous Year
20262027$0.75530$0.38400$1.13930-$0.0316
20252026$0.78690$0.38400$1.17090$0.1200
20242025$0.66690$0.38400$1.05090-$0.0023
20232024$0.66920$0.38400$1.05320-$0.1193
20222023$0.85460$0.31790$1.17250-$0.0838
20212022$0.93840$0.31790$1.25630$0.0000
20202021$0.95130$0.30500$1.25630-$0.1337
20192020$0.97000$0.42000$1.39000-$0.0700
20182019$1.04000$0.42000$1.46000$0.0000
20172018$1.04000$0.42000$1.46000$0.0000
20162017$1.04000$0.42000$1.46000$0.1067
20152016$1.04000$0.31330$1.35330$0.1000
20142015$1.04000$0.21330$1.25330$0.0000
20132014$1.04000$0.21330$1.25330$0.0000
20122013$1.04000$0.21330$1.25330$0.0000
20112012$1.04000$0.21330$1.25330$0.0000
20102011$1.04000$0.21330$1.25330$0.0000
20092010$1.04000$0.21330$1.25330$0.0000
20082009$1.04000$0.21330$1.25330$0.0000
20072008$1.04000$0.21330$1.25330-$0.2916
20062007$1.33160$0.21330$1.54490-$0.1252
20052006$1.45680$0.21330$1.67010$0.0487
20042005$1.41020$0.21120$1.62140$0.0629
20032004$1.36930$0.18920$1.55850$0.0999
20022003$1.27570$0.18290$1.45860-$0.0131
20012002$1.27700$0.19470$1.47170$0.0664
20002001$1.19780$0.20750$1.40530-$0.0731
19992000$1.19320$0.28520$1.47840-$0.0661
19981999$1.10130$0.44320$1.54450$0.0573
19971998$1.02510$0.46210$1.48720$0.0444
19961997$1.05550$0.38730$1.44280$0.0000
19951996$1.04040$0.40240$1.44280$0.0000
19941995$1.05300$0.38980$1.44280$0.0644
19931994$1.00550$0.37290$1.37840$0.9424
19921993$0.11990$0.31610$0.43600$0.0584
19911992$0.05420$0.32340$0.37760-$0.7824
19901991$0.90390$0.25610$1.16000$0.1200
19891990$0.81850$0.22150$1.04000$0.0750
19881989$0.76480$0.20016$0.96500$0.0550
19871988$0.66680$0.24320$0.91000$0.0700
19861987$0.63070$0.20930$0.84000$0.0400
19851986$0.59180$0.20820$0.80000$0.0700
19841985$0.54000$0.19000$0.73000$0.0200
19831984$0.56000$0.15000$0.71000$0.0300
19821983$0.51000$0.17000$0.68000-$0.6200
19811982$0.89000$0.41000$1.30000-$0.7400
19801981$1.26100$0.77900$2.04000$0.1800
19791980$1.14100$0.71900$1.86000$0.0400
19781979$1.11000$0.71000$1.82000-$0.0700
19771978$1.19000$0.70000$1.89000-$0.0500
19761977$1.27300$0.66700$1.94000$0.0000
19751976$1.28400$0.65600$1.94000-$0.0100
19741975$1.28000$0.67000$1.95000$0.0900
19731974$1.18100$0.67900$1.86000$0.0600
19721973$1.12900$0.67100$1.80000$0.1000
19711972$1.10000$0.60000$1.70000$0.1000
19701971$1.07000$0.53000$1.60000$0.0000
19691970  $1.60000$0.1500
19681969  $1.45000$0.0000
19671968  $1.45000$0.1000
19661967  $1.35000$0.0000
19651966  $1.35000-$0.1500
19641965  $1.50000$0.0000
19631964  $1.50000$0.0000
19621963  $1.50000$0.0000
19611962  $1.50000$0.0000
19601961  $1.50000$0.0000
19591960  $1.50000$0.0000
19581959  $1.50000$0.0000
19571958  $1.50000$0.0000
19561957  $1.50000$0.1500
19551956  $1.35000$0.0500
19541955  $1.30000$0.0000
19531954  $1.30000$0.1000
19521953  $1.20000$0.0000
19511952  $1.20000$0.1000
19501951  $1.10000$0.0000
19491950  $1.10000$0.0000
19481949  $1.10000$1.1000