Month	Monthly level
1991-01-01	692519000000
1991-02-01	633311000000
1991-03-01	728354000000
1991-04-01	627322000000
1991-05-01	615431000000
1991-06-01	697329000000
1991-07-01	669117000000
1991-08-01	843593000000
1991-09-01	652996000000
1991-10-01	630941000000
1991-11-01	745608000000
1991-12-01	1097334000000
1992-01-01	714044000000
1992-02-01	698797000000
1992-03-01	852942000000
1992-04-01	740476000000
1992-05-01	759304000000
1992-06-01	876536000000
1992-07-01	874623000000
1992-08-01	832121000000
1992-09-01	1714624000000
1992-10-01	964948000000
1992-11-01	1075909000000
1992-12-01	1020607000000
1993-01-01	1133794000000
1993-02-01	852675000000
1993-03-01	1024979000000
1993-04-01	855600000000
1993-05-01	906799000000
1993-06-01	1082240000000
1993-07-01	779226000000
1993-08-01	1018336000000
1993-09-01	1154396000000
1993-10-01	787773000000
1993-11-01	1025596000000
1993-12-01	1218012000000
1994-01-01	984115000000
1994-02-01	726590000000
1994-03-01	1104478000000
1994-04-01	781444000000
1994-05-01	1147029000000
1994-06-01	1126741000000
1994-07-01	917037000000
1994-08-01	966281000000
1994-09-01	911406000000
1994-10-01	703058000000
1994-11-01	1100247000000
1994-12-01	1428296000000
1995-01-01	1022996000000
1995-02-01	895737000000
1995-03-01	1169923000000
1995-04-01	856122000000
1995-05-01	870938000000
1995-06-01	1829155000000
1995-07-01	1429398000000
1995-08-01	1296635000000
1995-09-01	1011414000000
1995-10-01	1211554000000
1995-11-01	972328000000
1995-12-01	1694363000000
1996-01-01	1489451000000
1996-02-01	1127985000000
1996-03-01	1111159000000
1996-04-01	1005428000000
1996-05-01	1063150000000
1996-06-01	1162176000000
1996-07-01	1370707000000
1996-08-01	1155307000000
1996-09-01	1060467000000
1996-10-01	992661000000
1996-11-01	1497480000000
1996-12-01	1918317000000
1997-01-01	1266017000000
1997-02-01	1039093000000
1997-03-01	933269000000
1997-04-01	1393217000000
1997-05-01	1299985000000
1997-06-01	1425404000000
1997-07-01	1212369000000
1997-08-01	1093306000000
1997-09-01	1011819000000
1997-10-01	1415978000000
1997-11-01	1314663000000
1997-12-01	1240990000000
1998-01-01	1151207000000
1998-02-01	1093368000000
1998-03-01	1384618000000
1998-04-01	1023750000000
1998-05-01	1109860000000
1998-06-01	1470514000000
1998-07-01	1020785000000
1998-08-01	1121691000000
1998-09-01	842889000000
1998-10-01	880217000000
1998-11-01	1179794000000
1998-12-01	1459948000000
1999-01-01	900274000000
1999-02-01	915676000000
1999-03-01	945962000000
1999-04-01	761715000000
1999-05-01	805386000000
1999-06-01	1085973000000
1999-07-01	747731000000
1999-08-01	1252606000000
1999-09-01	1168517000000
1999-10-01	1073699000000
1999-11-01	1475044000000
1999-12-01	1164085000000
2000-01-01	899388000000
2000-02-01	820802000000
2000-03-01	892255000000
2000-04-01	635853000000
2000-05-01	955387000000
2000-06-01	1232925000000
2000-07-01	919897000000
2000-08-01	1026076000000
2000-09-01	1171398000000
2000-10-01	914565000000
2000-11-01	1141642000000
2000-12-01	1461612000000
2001-01-01	876905000000
2001-02-01	736863000000
2001-03-01	955511000000
2001-04-01	864467000000
2001-05-01	1288603000000
2001-06-01	1225216000000
2001-07-01	1140062000000
2001-08-01	1629184000000
2001-09-01	712399000000
2001-10-01	1169403000000
2001-11-01	954969000000
2001-12-01	1260383000000
2002-01-01	817899000000
2002-02-01	737927000000
2002-03-01	813810000000
2002-04-01	1159371000000
2002-05-01	1008066000000
2002-06-01	1422762000000
2002-07-01	947187000000
2002-08-01	840233000000
2002-09-01	914618000000
2002-10-01	902608000000
2002-11-01	1058647000000
2002-12-01	886676000000
2003-01-01	1119577000000
2003-02-01	832950000000
2003-03-01	1278831000000
2003-04-01	1460813000000
2003-05-01	1093700000000
2003-06-01	1265351000000
2003-07-01	1391176000000
2003-08-01	1177721000000
2003-09-01	980536000000
2003-10-01	1400240000000
2003-11-01	966494000000
2003-12-01	966795000000
2004-01-01	979980000000
2004-02-01	820058000000
2004-03-01	1667616000000
2004-04-01	1249570000000
2004-05-01	1760901000000
2004-06-01	1146207000000
2004-07-01	1265326000000
2004-08-01	1367920000000
2004-09-01	1650208000000
2004-10-01	1068758000000
2004-11-01	1246455000000
2004-12-01	1832525000000
2005-01-01	1314558000000
2005-02-01	974720000000
2005-03-01	1674989000000
2005-04-01	1818173000000
2005-05-01	1758538000000
2005-06-01	1425642000000
2005-07-01	1072578000000
2005-08-01	1411849000000
2005-09-01	1454951000000
2005-10-01	1144772000000
2005-11-01	1495205000000
2005-12-01	1266094000000
2006-01-01	1463347000000
2006-02-01	1400406000000
2006-03-01	1646004000000
2006-04-01	1463715000000
2006-05-01	1791481000000
2006-06-01	1781835000000
2006-07-01	1082678000000
2006-08-01	1472356000000
2006-09-01	1453432000000
2006-10-01	1572388000000
2006-11-01	2346791000000
2006-12-01	1518722000000
2007-01-01	1414000000000
2007-02-01	1229923000000
2007-03-01	1773229000000
2007-04-01	1546273000000
2007-05-01	1551591000000
2007-06-01	1664260000000
2007-07-01	1394808000000
2007-08-01	1649212000000
2007-09-01	1676790000000
2007-10-01	1796811000000
2007-11-01	1753855000000
2007-12-01	1884502000000
2008-01-01	1747612000000
2008-02-01	2092772000000
2008-03-01	1536568000000
2008-04-01	1932178000000
2008-05-01	1298054000000
2008-06-01	1456294000000
2008-07-01	1614109000000
2008-08-01	1748513000000
2008-09-01	1535374000000
2008-10-01	1329556000000
2008-11-01	1012720000000
2008-12-01	1314300000000
2009-01-01	1209533000000
2009-02-01	1363163000000
2009-03-01	2084445000000
2009-04-01	1358022000000
2009-05-01	1301465000000
2009-06-01	2470999000000
2009-07-01	954484000000
2009-08-01	1173391000000
2009-09-01	1023529000000
2009-10-01	1017076000000
2009-11-01	987244000000
2009-12-01	1326206000000
2010-01-01	1171050000000
2010-02-01	896914000000
2010-03-01	864997000000
2010-04-01	1255511000000
2010-05-01	1006538000000
2010-06-01	922225000000
2010-07-01	1244177000000
2010-08-01	1049762000000
2010-09-01	1214244000000
2010-10-01	988874000000
2010-11-01	1101235000000
2010-12-01	1643519000000
2011-01-01	1672124000000
2011-02-01	1515797000000
2011-03-01	1754858000000
2011-04-01	1426263000000
2011-05-01	2055585000000
2011-06-01	1815761000000
2011-07-01	1440466000000
2011-08-01	1389159000000
2011-09-01	1473733000000
2011-10-01	1483749000000
2011-11-01	1849714000000
2011-12-01	1792237000000
2012-01-01	1751805000000
2012-02-01	1574949000000
2012-03-01	1577979000000
2012-04-01	1799562000000
2012-05-01	1568188000000
2012-06-01	1524545000000
2012-07-01	1708224000000
2012-08-01	1650903000000
2012-09-01	1299359000000
2012-10-01	1700162000000
2012-11-01	1722030000000
2012-12-01	1478734000000
2013-01-01	1513762000000
2013-02-01	1603828000000
2013-03-01	1379347000000
2013-04-01	1331615000000
2013-05-01	1480719000000
2013-06-01	1490053000000
2013-07-01	1496521000000
2013-08-01	1528866000000
2013-09-01	1268724000000
2013-10-01	1308171000000
2013-11-01	1230617000000
2013-12-01	1629646000000
2014-01-01	1802342000000
2014-02-01	1413439000000
2014-03-01	1791499000000
2014-04-01	1782822000000
2014-05-01	1565011000000
2014-06-01	1895130000000
2014-07-01	1681540000000
2014-08-01	1682562000000
2014-09-01	2104138000000
2014-10-01	1882463000000
2014-11-01	1683048000000
2014-12-01	2228558000000
2015-01-01	1404890000000
2015-02-01	1655368000000
2015-03-01	1455750000000
2015-04-01	1523743000000
2015-05-01	1600647000000
2015-06-01	1601533000000
2015-07-01	1844354000000
2015-08-01	1877976000000
2015-09-01	1747753000000
2015-10-01	1740733000000
2015-11-01	2046854000000
2015-12-01	3714095000000
2016-01-01	1285462000000
2016-02-01	1131214000000
2016-03-01	1735829000000
2016-04-01	1412735000000
2016-05-01	1461343000000
2016-06-01	1672864000000
2016-07-01	1068198000000
2016-08-01	1453752000000
2016-09-01	1321319000000
2016-10-01	1429314000000
2016-11-01	1528341000000
2016-12-01	2122569000000
2017-01-01	1400862000000
2017-02-01	1287762000000
2017-03-01	1718632000000
2017-04-01	1277529000000
2017-05-01	1804453000000
2017-06-01	1825349000000
2017-07-01	1335470000000
2017-08-01	1588945000000
2017-09-01	1165911000000
2017-10-01	1221328000000
2017-11-01	1475231000000
2017-12-01	1515567000000
2018-01-01	1250296000000
2018-02-01	1782028000000
2018-03-01	1615709000000
2018-04-01	1618309000000
2018-05-01	1663968000000
2018-06-01	1560496000000
2018-07-01	1038736000000
2018-08-01	1461899000000
2018-09-01	1048697000000