Table 1 shows the gross domestic spending on Research & Development (R&D) as a percentage of GDP and the annual real GDP growth rate for five selected nations.
| Nation | Gross domestic spending on R&D (% of GDP) | Annual real GDP growth rate (%) |
|---|---|---|
| South Africa | 0.62 | 0.9 |
| Italy | 1.45 | 1.2 |
| France | 2.20 | 1.8 |
| Germany | 3.14 | 2.6 |
| South Korea | 4.81 | 3.6 |
Using Table 1, explain the relationship between gross domestic spending on R&D (as a % of GDP) and the annual real GDP growth rate.