| Fiscal year | Centroid location |
| 2007 | (−0.17, −0.03) (−0.17, 0.09) | (−0.17, −0.15) (−0.09, 0.06) | 2010 | (−0.16, −0.07) (0.01, 0.01) | (0.05, −0.12) (−0.12, −0.20) | 2013 | (−0.20, 0.00) (−0.16, −0.11) | (−0.11, 0.12) (−0.24, 0.15) | 2016 | (−0.10, −0.03) (−0.16, 0.10) | (−0.17, 0.35) (−0.21, −0.04) | 2018 | (−0.21, −0.04) (−0.15, 0.33) | (−0.10, −0.03) (−0.15, 0.11) |
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