Survey Index Variances 666 IBTS_Q1 1997 2020 1 1 0.00 0.25 2 9 1 1849138432.61142 5355508409.37643 941606282.835278 86112194.9989146 76070637.1203799 13989862.6358442 95348470.7708096 150918179.427667 1 12682143.8942459 300387195.169004 198473441.422116 50469438.3207885 10601521.392762 10627272.2447969 1361737.86399681 13576353.5825441 1 1954574743.84578 12194878126.2311 5968692026.31658 874627905.024782 142657855.627035 85349107.8453618 58840750.4275231 140231599.412793 1 766890748.18153 1283505547.71416 3435524696.73664 562324522.219666 604219133.522861 84165851.5687483 22267823.7278886 57658293.3924406 1 954261981.045705 415995162.071035 270708797.779868 1516859996.91306 324785256.605747 249538945.414738 54440778.2049137 49633090.808355 1 395538274.067836 2789737407.32207 194069527.331744 24254038.0429331 174997638.279348 20763968.8301201 47960014.5560782 45330836.3699997 1 910594745.674584 616823483.184907 1273698040.75186 27023402.4414081 22061076.1999374 120153736.777484 15114101.6346907 32630424.7590139 1 1434401757.78776 10914732299.0966 10439289944.7988 11523254488.215 614247052.157635 604773990.705989 1105850915.58613 740065952.6473 1 1320066199.83308 1606442484.84672 9697066391.83056 6287870541.7729 6504114642.03941 155725224.211469 580230481.822565 450139434.551392 1 7450757346.49674 6378595177.42887 1595158157.13559 18302223530.6555 17694554441.7575 7073087959.17733 80943090.6892282 1543789529.3388 1 65102063.8351515 231720353.849448 129113583.935347 122143299.714383 431711667.458553 294174842.456549 91259688.0313597 96255930.0901318 1 118190837.23776 60783591.6551544 64901483.4431469 73052470.4555813 58803126.3340299 103176975.707651 125135013.602357 87373423.7366922 1 282124986.604991 355609636.391046 456339185.847954 679879210.810889 404282641.124192 368929016.516945 1838370363.20075 2733795816.84136 1 9875099.5238998 64758121.0069167 34803687.0866193 25533809.0641563 54533562.6153104 53449590.4805851 71468557.5618981 347487954.653186 1 863711710.961959 876679485.582181 572596049.821849 58050077.2192142 199698168.735744 63559574.8954441 30613985.7304436 1073026649.45537 1 12252225.0523321 1041581596.26147 271507052.008766 72826316.4563402 39532353.0634165 15525248.1468254 12235732.7647294 243100321.848002 1 455746227.367023 196021515.184739 1830790549.59798 494926972.274095 248265984.018468 101079307.496109 78185746.2420425 378448051.817088 1 15406601.1102499 111856903.736179 89758552.6094997 288654374.386075 20470604.1872353 8213497.21162727 7020427.60998725 10535581.9846 1 6547769.90208848 6029078.69354899 69954800.2463192 10573987.764948 21044842.186331 1736094.58503674 1454992.98142647 418219.899117289 1 19099885.3789002 7161400.81195448 1218191.55039723 3926400.86378289 9676304.2485333 833711.323556103 19847.8848873263 16560.4007737432 1 11200666.1938285 216330403.587695 53096068.6097209 9453845.46708964 7193578.40661155 7742712.48441121 2205765.24240798 933979.872347856 1 17869381.7145057 48881921.9707226 4476502998.04068 100542480.869625 83996712.0106395 9914964.20458677 5882254.16954868 3815106.46460804 1 51971110.4927192 27311261.5375996 81578416.2203158 1564153650.91575 22077921.7419243 1803857.12017639 3014110.77747826 4954050.96186382 1 17263815.7019051 6657324.09212526 3050425.67050321 3661033.41559945 90298791.1785108 2176760.60539781 1404339.94259827 539437.414685702