Bash. Inserting blank line between strings that starts with different number

Bash. Inserting blank line between strings that starts with different number

Please help me with that. I Want to transform the file
1.0 0.1 0.02
1.0 0.2 0.04
1.1 -0.2 0.1
1.1 -0.1 0.1
1.2 1.0 0.2
into
1.0 0.1 0.02
1.0 0.2 0.04
1.1 -0.2 0.1
1.1 -0.1 0.1
1.2 1.0 0.2