g a[MONTHC E10N E20N E30N E40N E50N E60N E70N E80N E90N Jan 4200 3585 2970 2685 2400 2200 2000 1750 1500 Feb 5000 4250 3500 3110 2720 2460 2200 1900 1600 Mar 5400 4850 4300 3850 3400 2900 2400 2000 1600 April 5200 4650 4100 3700 3300 2750 2200 1900 1600 May 4500 4100 3700 3400 3100 2600 2100 1850 1600 June 3800 3350 2900 2600 2300 2050 1800 1575 1350 July 2300 2135 1970 1750 1530 1390 1250 1125 1000 Aug 1800 1635 1470 1360 1250 1125 1000 1000 1000 Sept 1840 1705 1570 1460 1350 1225 1100 1050 1000 Oct 1900 1780 1660 1565 1470 1335 1200 1150 1100 Nov 2200 2085 1970 1840 1710 1555 1400 1300 1200 Dec 3500 2950 2400 2215 2030 1815 1600 1450 1300