Using Extract D, identify two significant points of comparison between the total value of UK exports of goods and the manufacturing productivity index over the period shown.

| Year | Quarter | Exports (£billion) | Productivity index (Base: 2015 Q1 = 100) |
|---|---|---|---|
| 2015 | Q1 | 70 | 100 |
| 2015 | Q2 | 72 | 101 |
| 2015 | Q3 | 75 | 103 |
| 2015 | Q4 | 78 | 104 |
| 2016 | Q1 | 82 | 106 |
| 2016 | Q2 | 85 | 105 |
| 2016 | Q3 | 80 | 103 |
| 2016 | Q4 | 79 | 101 |
| 2017 | Q1 | 81 | 102 |
| 2017 | Q2 | 83 | 103 |
| 2017 | Q3 | 86 | 104 |
| 2017 | Q4 | 88 | 105 |
| 2018 | Q1 | 92 | 108 |
| 2018 | Q2 | 95 | 109 |
| 2018 | Q3 | 93 | 107 |
| 2018 | Q4 | 88 | 102 |
| 2019 | Q1 | 85 | 98 |
| 2019 | Q2 | 82 | 95 |
| 2019 | Q3 | 84 | 96 |
| 2019 | Q4 | 87 | 97 |
| 2020 | Q1 | 89 | 97 |