Year Index (Units) 2013 101.100 2014 104.033 2015 107.442 2016 110.608 2017 112.333 2018 112.958 2019 114.192 2020 116.592 2021 120.583 2022 125.383 2023 129.950 2024 134.067 2025 137.724 2026 141.037 2027 144.044 2028 146.705 2029 149.284