Can we sort the internal table data like 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 and 2.10

I have an internal table in that following data exists

2.1

2.10

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.9
I need to sort this data like 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 and 2.10 I used SORT lt_table BY id ASCENDING syntax but it is not working
Can any one tell me is this possible or not in sap abap