a macro to finding maximum value

[aminexcel]

i have a table same this in 5000 rows and 10 columns that are years from 1998 to 2007. ISO2 is two digit names of countries.

ISO2 D1998 D1999 D2000 D2001 D2002 D2003 D2004 D2005 D2006 D2007
CL 135 147 180 192 48 629 494 137 135 359
CL 132 145 177 190 45 623 491 134 132 356
CL 129 141 174 186 42 617 488 131 129 353
EC 126 139 171 184 39 611 485 128 126 350
EC 123 135 168 180 36 605 482 125 123 347
EC 120 133 165 178 33 599 479 122 120 344
KH 117 129 162 174 30 593 476 119 117 341
KH 114 127 159 172 27 587 473 116 114 338
KH 111 123 156 168 24 581 470 113 111 335
PH 108 121 153 166 21 575 467 110 108 332
PH 105 117 150 162 18 569 464 107 105 329
PH 102 115 147 160 15 563 461 104 102 326
PH 99 111 144 156 12 557 458 101 99 323
VE 96 109 141 154 9 551 455 98 96 320

i want a macro to advance filter column A and make a unique list of it and then find the maximum value of each country in column A in 10 years. for example final table for country "CL" must be same this

ISO2 D1998 D1999 D2000 D2001 D2002 D2003 D2004 D2005 D2006 D2007
CL 135 147 180 192 629 629 494 137 135 359

thank a lot