How has Amgen's gross profit margin evolved since 2022?

Amgen's gross profit margin has shown a declining trend since 2022, decreasing from 81.61% on March 31, 2022, to 64.22% by the end of 2024, with several fluctuations along the way.

|code|Ticker|Name|Date|Gross Profit Margin|Gross Profit Margin YoY|market_code|
|---|---|---|---|---|---|---|
|AMGN|AMGN.O|Amgen|2022 Q1|81.6088|3.45877625015055|185|
|AMGN|AMGN.O|Amgen|2022 Q2|81.2604|2.283300439038153|185|
|AMGN|AMGN.O|Amgen|2022 Q3|81.2373|1.7144538488506156|185|
|AMGN|AMGN.O|Amgen|2022 Q4|80.3072|-0.06533125434765073|185|
|AMGN|AMGN.O|Amgen|2023 Q1|75.0086|-8.087608199115783|185|
|AMGN|AMGN.O|Amgen|2023 Q2|76.287|-6.120324290798467|185|
|AMGN|AMGN.O|Amgen|2023 Q3|76.8203|-5.437157561858901|185|
|AMGN|AMGN.O|Amgen|2023 Q4|73.3519|-8.660867269684406|185|
|AMGN|AMGN.O|Amgen|2024 Q1|59.6656|-20.454987828062386|185|
|AMGN|AMGN.O|Amgen|2024 Q2|62.0028|-18.724291163632078|185|