When Do People In Different Countries Start Having Sex?

Interesting statistics that I don't have a ready explanation for. 

Average age people lose their virginity:

Malaysia: 23

India: 22.9

Singapore: 22.8

China: 22.1

Thailand: 20.5

Hong Kong: 20.2

Vietnam: 19.7

Nigeria: 19.7

Japan: 19.4

 Spain: 19.2

Indonesia: 19.1

Poland: 19

Italy: 18.9

Taiwan: 18.9

Russia: 18.7

Mexico: 18.7

South Africa: 18.7

France: 18.5

 United Kingdom: 18.3

Switzerland: 18.2

Canada: 18.1

Netherlands: 18.1

 Greece: 18.1

United States: 18

Australia: 17.9

Turkey: 17.8

New Zealand: 17.8

Slovakia: 17.8

Germany: 17.6

Brazil: 17.4

Ireland: 17.3

Croatia: 17.3

Austria: 17.3

Czech Republic: 17.2

Chile: 17.2

Belgium: 17.2

Portugal: 16.9

Bulgaria: 16.9

Israel: 16.7

Finland: 16.5

Norway: 16.5

Sweden: 16.2

Denmark: 16.1

Iceland: 15.6

8:49 AM · Jun 2, 2023

Average number of sexual partners:

Turkey : 14.5

Australia : 13.3

New Zealand : 13.2

Iceland : 13

South Africa : 12.5

Finland : 12.4

Norway : 12.1

Italy : 11.8

Sweden : 11.8

Switzerland : 11.1

Ireland : 11.1

USA : 10.7

Canada : 10.7

Japan : 10.2

UK : 9.8

Denmark : 9.3

Brazil : 9

Russia : 9

Mexico : 9

Netherlands : 7

Germany : 5.8

China : 3.1

India : 3

8:53 AM · Jun 2, 2023

% of Births Outside of Registered Marriage in Europe, 2022

Iceland: 69.4

France: 62.2

Bulgaria: 59.6

Norway: 58.5

Portugal: 57.9

Slovenia: 56.5

Sweden: 55.2

Denmark: 54.2

Estonia: 53.7

Netherlands: 53.5

Czechia: 48.45

Spain: 47.6

Finland: 46.1 (Europa)

8:51 AM · Jun 2, 2023

From here.