Month	Monthly level
1990-01-01	529000000
1990-02-01	401000000
1990-03-01	432000000
1990-04-01	415000000
1990-05-01	334000000
1990-06-01	453000000
1990-07-01	512000000
1990-08-01	330000000
1990-09-01	483000000
1990-10-01	551000000
1990-11-01	555000000
1990-12-01	462000000
1991-01-01	404000000
1991-02-01	366000000
1991-03-01	367000000
1991-04-01	362000000
1991-05-01	363000000
1991-06-01	428000000
1991-07-01	517000000
1991-08-01	408000000
1991-09-01	461000000
1991-10-01	561000000
1991-11-01	520000000
1991-12-01	517000000
1992-01-01	438000000
1992-02-01	520000000
1992-03-01	489000000
1992-04-01	444000000
1992-05-01	432000000
1992-06-01	501000000
1992-07-01	502000000
1992-08-01	416000000
1992-09-01	482000000
1992-10-01	550000000
1992-11-01	512000000
1992-12-01	451000000
1993-01-01	425000000
1993-02-01	496000000
1993-03-01	430000000
1993-04-01	453000000
1993-05-01	487000000
1993-06-01	495000000
1993-07-01	519000000
1993-08-01	470000000
1993-09-01	533000000
1993-10-01	579000000
1993-11-01	524000000
1993-12-01	644000000
1994-01-01	528000000
1994-02-01	641000000
1994-03-01	541000000
1994-04-01	543000000
1994-05-01	572000000
1994-06-01	621000000
1994-07-01	606000000
1994-08-01	636000000
1994-09-01	632000000
1994-10-01	686000000
1994-11-01	634000000
1994-12-01	700000000
1995-01-01	552000000
1995-02-01	565000000
1995-03-01	569000000
1995-04-01	464000000
1995-05-01	676000000
1995-06-01	637000000
1995-07-01	512000000
1995-08-01	580000000
1995-09-01	539000000
1995-10-01	582000000
1995-11-01	585000000
1995-12-01	755000000
1996-01-01	486000000
1996-02-01	669000000
1996-03-01	650000000
1996-04-01	520000000
1996-05-01	657000000
1996-06-01	701000000
1996-07-01	585000000
1996-08-01	570000000
1996-09-01	631000000
1996-10-01	780000000
1996-11-01	821000000
1996-12-01	714000000
1997-01-01	502000000
1997-02-01	484000000
1997-03-01	628000000
1997-04-01	649000000
1997-05-01	572000000
1997-06-01	780000000
1997-07-01	589000000
1997-08-01	570000000
1997-09-01	913000000
1997-10-01	841000000
1997-11-01	756000000
1997-12-01	792000000
1998-01-01	502000000
1998-02-01	569000000
1998-03-01	694000000
1998-04-01	533000000
1998-05-01	518000000
1998-06-01	597000000
1998-07-01	599000000
1998-08-01	465000000
1998-09-01	684000000
1998-10-01	743000000
1998-11-01	727000000
1998-12-01	890000000
1999-01-01	523000000
1999-02-01	468000000
1999-03-01	646000000
1999-04-01	642000000
1999-05-01	699000000
1999-06-01	700000000
1999-07-01	812000000
1999-08-01	648000000
1999-09-01	672000000
1999-10-01	656000000
1999-11-01	799000000
1999-12-01	854000000
2000-01-01	543000000
2000-02-01	712000000
2000-03-01	789000000
2000-04-01	674000000
2000-05-01	785000000
2000-06-01	647000000
2000-07-01	601000000
2000-08-01	625000000
2000-09-01	634000000
2000-10-01	673000000
2000-11-01	615000000
2000-12-01	729000000
2001-01-01	639000000
2001-02-01	605000000
2001-03-01	661000000
2001-04-01	451000000
2001-05-01	636000000
2001-06-01	657000000
2001-07-01	719000000
2001-08-01	541000000
2001-09-01	767000000
2001-10-01	868000000
2001-11-01	620000000
2001-12-01	574000000
2002-01-01	539000000
2002-02-01	537000000
2002-03-01	570000000
2002-04-01	606000000
2002-05-01	641000000
2002-06-01	727000000
2002-07-01	675000000
2002-08-01	656000000
2002-09-01	655000000
2002-10-01	1111000000
2002-11-01	943000000
2002-12-01	1118000000
2003-01-01	530000000
2003-02-01	629000000
2003-03-01	1204000000
2003-04-01	718000000
2003-05-01	736000000
2003-06-01	862000000
2003-07-01	643000000
2003-08-01	695000000
2003-09-01	753000000
2003-10-01	871000000
2003-11-01	867000000
2003-12-01	1487000000
2004-01-01	574000000
2004-02-01	548000000
2004-03-01	802000000
2004-04-01	861000000
2004-05-01	688000000
2004-06-01	805000000
2004-07-01	737000000
2004-08-01	774000000
2004-09-01	666000000
2004-10-01	981000000
2004-11-01	1182000000
2004-12-01	1935000000
2005-01-01	637000000
2005-02-01	783000000
2005-03-01	820000000
2005-04-01	858000000
2005-05-01	773000000
2005-06-01	1083000000
2005-07-01	844000000
2005-08-01	872000000
2005-09-01	851000000
2005-10-01	1093000000
2005-11-01	1430000000
2005-12-01	1427000000
2006-01-01	864000000
2006-02-01	1087000000
2006-03-01	1259000000
2006-04-01	1249000000
2006-05-01	1092000000
2006-06-01	1178000000
2006-07-01	941000000
2006-08-01	876000000
2006-09-01	1257000000
2006-10-01	973000000
2006-11-01	1240000000
2006-12-01	1392000000
2007-01-01	864000000
2007-02-01	760000000
2007-03-01	1038000000
2007-04-01	898000000
2007-05-01	763000000
2007-06-01	1190000000
2007-07-01	1123000000
2007-08-01	956000000
2007-09-01	1312000000
2007-10-01	1037000000
2007-11-01	1538000000
2007-12-01	1540000000
2008-01-01	977000000
2008-02-01	774000000
2008-03-01	951000000
2008-04-01	913000000
2008-05-01	993000000
2008-06-01	970000000
2008-07-01	1054000000
2008-08-01	1189000000
2008-09-01	1295000000
2008-10-01	1181000000
2008-11-01	1400000000
2008-12-01	1867000000
2009-01-01	831000000
2009-02-01	723000000
2009-03-01	968000000
2009-04-01	911000000
2009-05-01	732000000
2009-06-01	875000000
2009-07-01	952000000
2009-08-01	521000000
2009-09-01	900000000
2009-10-01	1061000000
2009-11-01	857000000
2009-12-01	1720000000
2010-01-01	506000000
2010-02-01	556000000
2010-03-01	650000000
2010-04-01	596000000
2010-05-01	773000000
2010-06-01	821000000
2010-07-01	899000000
2010-08-01	618000000
2010-09-01	842000000
2010-10-01	719000000
2010-11-01	1114000000
2010-12-01	1071000000
2011-01-01	621000000
2011-02-01	676000000
2011-03-01	942000000
2011-04-01	641000000
2011-05-01	660000000
2011-06-01	580000000
2011-07-01	644000000
2011-08-01	435000000
2011-09-01	808000000
2011-10-01	909000000
2011-11-01	777000000
2011-12-01	761000000
2012-01-01	866000000
2012-02-01	899000000
2012-03-01	912000000
2012-04-01	888000000
2012-05-01	1058000000
2012-06-01	1019000000
2012-07-01	997000000
2012-08-01	805000000
2012-09-01	753000000
2012-10-01	843000000
2012-11-01	847000000
2012-12-01	687000000
2013-01-01	760000000
2013-02-01	807000000
2013-03-01	721000000
2013-04-01	769000000
2013-05-01	842000000
2013-06-01	691000000
2013-07-01	885000000
2013-08-01	706000000
2013-09-01	754000000
2013-10-01	907000000
2013-11-01	774000000
2013-12-01	704000000
2014-01-01	772000000
2014-02-01	829000000
2014-03-01	930000000
2014-04-01	904000000
2014-05-01	900000000
2014-06-01	974000000
2014-07-01	1156000000
2014-08-01	805000000
2014-09-01	1061000000
2014-10-01	1002000000
2014-11-01	910000000
2014-12-01	1031000000
2015-01-01	1148000000
2015-02-01	1581000000
2015-03-01	1484000000
2015-04-01	1176000000
2015-05-01	948000000
2015-06-01	1072000000
2015-07-01	1080000000
2015-08-01	841000000
2015-09-01	1155000000
2015-10-01	1018000000
2015-11-01	1006000000
2015-12-01	1167000000
2016-01-01	1046000000
2016-02-01	1253000000
2016-03-01	1217000000
2016-04-01	1231000000
2016-05-01	1238000000
2016-06-01	1319000000
2016-07-01	1368000000
2016-08-01	1170000000
2016-09-01	1427000000
2016-10-01	1161000000
2016-11-01	1374000000
2016-12-01	1410000000
2017-01-01	1402000000
2017-02-01	1443000000
2017-03-01	1611000000
2017-04-01	1409000000
2017-05-01	1679000000
2017-06-01	1595000000
2017-07-01	1750000000
2017-08-01	1487000000
2017-09-01	1644000000
2017-10-01	1519000000
2017-11-01	1548000000
2017-12-01	1385000000
2018-01-01	1425000000
2018-02-01	1443000000
2018-03-01	1668000000
2018-04-01	1502000000
2018-05-01	1528000000
2018-06-01	1628000000
2018-07-01	1669000000
2018-08-01	1460000000