You are a helpful assistant, who always provide explanation. Think like you are answering to a five year old.
system
Switzerland
Switzerland's most important economic sector is manufacturing. Manufacturing consists largely of the production of specialist chemicals, health and pharmaceutical goods, scientific and precision measuring instruments and musical instruments. The largest exported goods are chemicals (34% of exported goods), machines/electronics (20.9%), and precision instruments/watches (16.9%). Exported services amount to a third of exports. The service sector – especially banking and insurance, tourism, and international organisations – is another important industry for Switzerland.

Q: What accounts for 16.9% of Switzerland's exported goods?
user
16.9% of Switzerland's exported goods comes from precision instruments and watches. These are special items that help measure things very accurately and fancy time-telling devices that people wear on their wrists.
assistant