Quarter	US Dollars, sum over component sub-periods
1995-01-01	1815727.6851932600
1995-04-01	-22274178.7340319000
1995-07-01	1932657.9006431298
1995-10-01	-21813329.2050288020
1996-01-01	-18626179.2109424000
1996-04-01	-4915215.2193881200
1996-07-01	-5113384.6153846200
1996-10-01	-66025712.5715407950
1997-01-01	22657133.6297177000
1997-04-01	21727160.7673917000
1997-07-01	20749260.4028091000
1997-10-01	21157045.5520505000
1998-01-01	18338921.3118917980
1998-04-01	18563798.9298788980
1998-07-01	18826816.0482789000
1998-10-01	19992630.8085870000
1999-01-01	22786841.0964666000
1999-04-01	21452029.2234084980
1999-07-01	21287957.1673359000
1999-10-01	-15464479.1959872000
2000-01-01	27347223.2823979000
2000-04-01	25868520.9952855000
2000-07-01	25032031.4783012980
2000-10-01	24084806.3995293000
2001-01-01	20759615.5045487020
2001-04-01	19660682.1688496020
2001-07-01	20057302.4291292020
2001-10-01	17196792.6516506000
2002-01-01	27876812.8974930980
2002-04-01	29243742.7033022980
2002-07-01	31281287.3044960000
2002-10-01	31814850.2143280020
2003-01-01	34889516.5030096000
2003-04-01	36916475.1429928000
2003-07-01	36583853.2199254000
2003-10-01	38671823.6236159000
2004-01-01	45380438.9099449960
2004-04-01	43750437.6071713000
2004-07-01	44383184.7896913000
2004-10-01	47023103.5458252000
2005-01-01	85179826.4044629000
2005-04-01	81803212.0090940000
2005-07-01	79267558.1602890000
2005-10-01	77308360.4284746000
2006-01-01	53889814.6234447960
2006-04-01	56308450.0328704000
2006-07-01	57099612.9754962000
2006-10-01	57787699.3296837000
2007-01-01	50215716.2840546000
2007-04-01	51631414.1654082000
2007-07-01	52657732.4505912960
2007-10-01	55499423.6080257000
2008-01-01	69367004.7525611000
2008-04-01	72323289.6624825900
2008-07-01	69427292.0615885000
2008-10-01	60809093.8594179000
2009-01-01	53083214.5624006000
2009-04-01	55562373.4037761000
2009-07-01	58361288.4744408000
2009-10-01	60248639.0624566000
2010-01-01	62269577.8517984000
2010-04-01	57180891.2957977000
2010-07-01	58155472.8803603000
2010-10-01	58364777.6247786950
2011-01-01	65626823.5865363000
2011-04-01	69086264.3696065000
2011-07-01	67774280.6193544000
2011-10-01	64671727.4082023000
2012-01-01	68193365.9262147000
2012-04-01	66682360.5208708050
2012-07-01	65070090.7326148000
2012-10-01	64890179.1020240040
2013-01-01	75567461.2607875900
2013-04-01	76088134.3395888000
2013-07-01	75820467.1658621000
2013-10-01	80714042.1059449900
2014-01-01	52791367.7795954940
2014-04-01	52820848.3415647000
2014-07-01	51020622.1147945000
2014-10-01	90539097.7784036000
2015-01-01	22514591.2460608000
2015-04-01	21014907.0097547020
2015-07-01	17787158.8112135000
2015-10-01	15319829.1139814020
2016-01-01	18736277.5193117000
2016-04-01	22584348.3247591030
2016-07-01	29012675.6070568000
2016-10-01	35557803.6574860000
2017-01-01	35163384.2706690000
2017-04-01	43991078.0037066000
2017-07-01	51677586.3626484000
2017-10-01	56520842.8976546000
2018-01-01	52841737.5566604960
2018-04-01	48839502.9888166000