Quarter US dollars 2004-12-31 269 2005-03-31 253 2005-06-30 113 2005-09-30 108 2005-12-31 106 2006-03-31 144 2006-06-30 128 2006-09-30 106 2006-12-31 114 2007-03-31 224 2007-06-30 289 2007-09-30 130 2007-12-31 127 2008-03-31 137 2008-06-30 40 2008-09-30 130 2008-12-31 122 2009-03-31 122 2009-06-30 140 2009-09-30 189 2009-12-31 166 2010-03-31 167 2010-06-30 221 2010-09-30 236 2010-12-31 243 2011-03-31 223 2011-06-30 252 2011-09-30 254 2011-12-31 249 2012-03-31 276 2012-06-30 260 2012-09-30 215 2012-12-31 424 2013-03-31 288 2013-06-30 276 2013-09-30 290 2013-12-31 302 2014-03-31 268 2014-06-30 263 2014-09-30 237 2014-12-31 176 2015-03-31 178 2015-06-30 182 2015-09-30 176 2015-12-31 164 2016-03-31 162 2016-06-30 165 2016-09-30 165 2016-12-31 124 2017-03-31 165 2017-06-30 809 2017-09-30 978 2017-12-31 1131 2018-03-31 904 2018-06-30 1207 2018-09-30 1069 2018-12-31 881 2019-03-31 919 2019-06-30 964 2019-09-30 860 2019-12-31 1025 2020-03-31 941 2020-06-30 800 2020-09-30 991 2020-12-31 831 2021-03-31 1007 2021-06-30 1209 2021-09-30 1246 2021-12-31 1373 2022-03-31 1503 2022-06-30 1162 2022-09-30 955 2022-12-31 1152 2023-03-31 970 2023-06-30 988 2023-09-30 1058