Year Index (Units) 2008 59.153 2009 54.616 2010 56.373 2011 59.146 2012 60.870 2013 61.072 2014 60.586 2015 59.087 2016 58.557 2017 60.566 2018 86.048 2019 534.489 2020 2397.639 2021 3853.897 2022 13248.152 2023 116424.262 2024 818063.544 2025 5182900.205 2026 31169572.672 2027 177893696.643 2028 963297845.002 2029 4816489225.011