Table:
revised annual nominal gdp
previously-published annual nominal gdp
revision
revised growth in annual gdp
previously-published growth in annual gdp
absolute revision to growth in annual gdp

billions of dollars
percent
percentage point

2017
2,140.64
2,141.11
-0.5
5.68
5.71
0.03

2018
2,231.17
2,223.86
7.3
4.23
3.86
0.37

2019
2,310.71
2,303.88
6.8
3.57
3.60
0.03

2017 to 2019 average
2,227.51
2,222.95
4.6
4.49
4.39
0.10

Statement: in 2018, the level of nominal gdp was revised upward by $7.3 billion.
Question: how much did the level of nominal gdp revise upward in 2018?
Answer: [7.3]