Timeline时间线
Annual signings, active-agreement counts, top-signatory trajectories, and the currency-cap mix across 2002–2021.2002–2021 年间的年度签署量、存续协议数量、主要签署方轨迹，以及上限货币构成。
Annual signings & active counts年度签署量与存续数量
Bars = newly signed each year (originals + renewals stacked). Line = total agreements active in that year.柱状 = 当年新签署量（原始 + 续签堆叠）。折线 = 当年存续的协议总数。
Top-5 signatory trajectories前 5 大签署方轨迹
Annual signings involving each of the 5 most-active jurisdictions.活跃度最高的 5 个司法辖区各自参与的年度签署量。
Currency cap mix上限货币构成
USD vs EUR vs bilateral-local vs no-cap arrangements per year.每年美元、欧元、双边本币与无上限安排的对比。