To calculate 51% of 1999, we need to understand that percent means "per hundred." So, 51% is equivalent to 51/100 or 0.51 when expressed as a decimal.
The filled portion represents 51% of the total bar.
51% of 1999.01 = 1019.4951
51% of 1999.02 = 1019.5002
51% of 1999.03 = 1019.5053
51% of 1999.04 = 1019.5104
51% of 1999.05 = 1019.5155
51% of 1999.06 = 1019.5206
51% of 1999.07 = 1019.5257
51% of 1999.08 = 1019.5308
51% of 1999.09 = 1019.5359
51% of 1999.1 = 1019.541
51% of 1999.11 = 1019.5461
51% of 1999.12 = 1019.5512
51% of 1999.13 = 1019.5563
51% of 1999.14 = 1019.5614
51% of 1999.15 = 1019.5665
51% of 1999.16 = 1019.5716
51% of 1999.17 = 1019.5767
51% of 1999.18 = 1019.5818
51% of 1999.19 = 1019.5869
51% of 1999.2 = 1019.592
51% of 1999.21 = 1019.5971
51% of 1999.22 = 1019.6022
51% of 1999.23 = 1019.6073
51% of 1999.24 = 1019.6124
51% of 1999.25 = 1019.6175
51% of 1999.26 = 1019.6226
51% of 1999.27 = 1019.6277
51% of 1999.28 = 1019.6328
51% of 1999.29 = 1019.6379
51% of 1999.3 = 1019.643
51% of 1999.31 = 1019.6481
51% of 1999.32 = 1019.6532
51% of 1999.33 = 1019.6583
51% of 1999.34 = 1019.6634
51% of 1999.35 = 1019.6685
51% of 1999.36 = 1019.6736
51% of 1999.37 = 1019.6787
51% of 1999.38 = 1019.6838
51% of 1999.39 = 1019.6889
51% of 1999.4 = 1019.694
51% of 1999.41 = 1019.6991
51% of 1999.42 = 1019.7042
51% of 1999.43 = 1019.7093
51% of 1999.44 = 1019.7144
51% of 1999.45 = 1019.7195
51% of 1999.46 = 1019.7246
51% of 1999.47 = 1019.7297
51% of 1999.48 = 1019.7348
51% of 1999.49 = 1019.7399
51% of 1999.5 = 1019.745
51% of 1999.51 = 1019.7501
51% of 1999.52 = 1019.7552
51% of 1999.53 = 1019.7603
51% of 1999.54 = 1019.7654
51% of 1999.55 = 1019.7705
51% of 1999.56 = 1019.7756
51% of 1999.57 = 1019.7807
51% of 1999.58 = 1019.7858
51% of 1999.59 = 1019.7909
51% of 1999.6 = 1019.796
51% of 1999.61 = 1019.8011
51% of 1999.62 = 1019.8062
51% of 1999.63 = 1019.8113
51% of 1999.64 = 1019.8164
51% of 1999.65 = 1019.8215
51% of 1999.66 = 1019.8266
51% of 1999.67 = 1019.8317
51% of 1999.68 = 1019.8368
51% of 1999.69 = 1019.8419
51% of 1999.7 = 1019.847
51% of 1999.71 = 1019.8521
51% of 1999.72 = 1019.8572
51% of 1999.73 = 1019.8623
51% of 1999.74 = 1019.8674
51% of 1999.75 = 1019.8725
51% of 1999.76 = 1019.8776
51% of 1999.77 = 1019.8827
51% of 1999.78 = 1019.8878
51% of 1999.79 = 1019.8929
51% of 1999.8 = 1019.898
51% of 1999.81 = 1019.9031
51% of 1999.82 = 1019.9082
51% of 1999.83 = 1019.9133
51% of 1999.84 = 1019.9184
51% of 1999.85 = 1019.9235
51% of 1999.86 = 1019.9286
51% of 1999.87 = 1019.9337
51% of 1999.88 = 1019.9388
51% of 1999.89 = 1019.9439
51% of 1999.9 = 1019.949
51% of 1999.91 = 1019.9541
51% of 1999.92 = 1019.9592
51% of 1999.93 = 1019.9643
51% of 1999.94 = 1019.9694
51% of 1999.95 = 1019.9745
51% of 1999.96 = 1019.9796
51% of 1999.97 = 1019.9847
51% of 1999.98 = 1019.9898
51% of 1999.99 = 1019.9949
