get unique sort result ids

ID	SORT
2000001	1
2000054	1
2000161	1
2004102	1
2000126	8
2000161	8
2004102	8
2000001	51
2000054	51
2000161	51
2004102	51
2000126	58
2000161	58
2004102	58


Output 

ID  SORT
2000001	1
2000054	1
2000161	1
2004102	1
2000126	8
2000161	8
2004102	8
we want all unique ID values with minimum sort values