,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012
January,2200,2900,4000,7000,4500,4600,9700,6750,7200,4400,6900,3200,6800,3250,1800
February,5000,6500,8000,7750,4000,4800,9050,5900,4800,5800,3150,4900,3400,2600,1800
March,3200,4250,3900,2850,7000,9500,6700,5500,7300,4750,1250,3000,4000,3100,3050
April,2100,5500,2600,3300,2900,7400,2750,5500,5000,3000,900,2100,3900,1900,4200
May,3250,4250,4000,2650,7000,9500,6700,5500,7300,4750,1300,3000,4000,3100,3050
June,1800,900,1800,1500,600,1600,1200,2800,2600,3300,900,1600,1600,2100,1800
July,2400,6200,5400,8000,7400,7600,5700,6200,3050,1700,4100,3300,2600,700,3300
August,1050,1000,2300,1000,1000,800,800,2050,2400,1200,1900,1700,1200,1000,1900
September,600,1100,1800,2850,800,700,4000,600,1400,2400,600,2050,2200,600,2000
October,5300,4700,4000,3950,1200,1400,6900,2100,2300,4300,6900,3200,6750,3250,1750
November,2400,6200,5400,8000,7250,7600,5700,6150,3050,1700,4100,3200,2600,700,3300
December,4400,2600,1550,10400,8600,8800,9200,5000,5300,3600,2400,3300,3400,1000,2700