Is there a trend in nationality of the bribers? In some countries bribes are extremely common. Including a few very large countries with an increasing presence

Is there a trend in nationality of the bribers? In some countries bribes are extremely common. Including a few very large countries with an increasing presence in global academia. Are these bribes coming from the UK, France, Germany, the US, Japan, who have long contributed to the international academic scene and which don't have pervasive issues with bribes?