Year National currency (Billions) 2014 -3.148 2015 -2.188 2016 -1.924 2017 -1.113 2018 0.025 2019 1.996 2020 -0.568 2021 -0.274 2022 2.037 2023 0.387 2024 0.252 2025 0.309 2026 0.303 2027 0.469 2028 1.333 2029 1.370