yearmonth	created	closed
2005-11-20	75	25
2005-12-20	12	15
2006-01-20	26	16
2006-02-20	21	11
2006-03-20	15	28
2006-04-20	100	52
2006-05-20	45	37
2006-06-20	180	159
2006-07-20	43	45
2006-08-20	73	72
2006-09-20	57	43
2006-10-20	37	40
2006-11-20	21	19
2006-12-20	31	31
2007-01-20	23	38
2007-02-20	172	76
2007-03-20	254	179
2007-04-20	58	48
2007-05-20	151	150
2007-06-20	144	133
2007-07-20	62	51
2007-08-20	54	48
2007-09-20	67	81
2007-10-20	88	105
2007-11-20	53	62
2007-12-20	81	39
2008-01-20	100	63
2008-02-20	173	164
2008-03-20	165	158
2008-04-20	152	115
2008-05-20	135	111
2008-06-20	132	143
2008-07-20	107	101
2008-08-20	77	80
2008-09-20	107	101
2008-10-20	273	189
2008-11-20	199	208
2008-12-20	86	79
2009-01-20	136	105
2009-02-20	293	185
2009-03-20	201	168
2009-04-20	132	117
2009-05-20	175	182
2009-06-20	245	237
2009-07-20	103	100
2009-08-20	223	172
2009-09-20	335	196
2009-10-20	266	208
2009-11-20	223	207
2009-12-20	147	135
2010-01-20	239	148
2010-02-20	218	266
2010-03-20	380	375
2010-04-20	189	194
2010-05-20	207	156
2010-06-20	210	229
2010-07-20	120	115
2010-08-20	200	186
2010-09-20	280	239
2010-10-20	147	164
2010-11-20	216	200
2010-12-20	145	122
2011-01-20	187	231
2011-02-20	174	206
2011-03-20	220	143
2011-04-20	180	130
2011-05-20	243	184
2011-06-20	91	78
2011-07-20	154	129
2011-08-20	155	149
2011-09-20	290	179
2011-10-20	182	267
2011-11-20	280	239
2011-12-20	159	133
2012-01-20	197	241
2012-02-20	159	187
2012-03-20	242	230
2012-04-20	228	204
2012-05-20	251	189
2012-06-20	247	208
2012-07-20	229	182
2012-08-20	231	177
2012-09-20	189	152
2012-10-20	324	322
2012-11-20	248	246
2012-12-20	121	122
2013-01-20	195	184
2013-02-20	275	227
2013-03-20	216	177
2013-04-20	207	160
2013-05-20	247	263
2013-06-20	219	171
2013-07-20	155	139
2013-08-20	145	102
2013-09-20	288	233
2013-10-20	414	281
2013-11-20	285	341
2013-12-20	198	206
2014-01-20	458	303
2014-02-20	383	340
2014-03-20	456	348
2014-04-20	337	232
2014-05-20	435	453
2014-06-20	359	222
2014-07-20	281	219
2014-08-20	319	299
2014-09-20	238	193