Figure 2. The Shanghai export container freight index with monthly data of 2019-2020

From

Major Factors Affecting Shanghai Shipping Freight Rates during the Covid-19 Pandemic: Inspecting and Ranking by Grey Relational Analysis

Hsiang-Hsi Liu, Fu-Hsiang Kuo, Guan-Ting Liu

Journal of Finance and Economics. 2024, 12(2), 29-38 doi:10.12691/jfe-12-2-2