Acording to Eurostat, across the EU Member States, Ireland recorded in 2016 the largest ratio of investment to GDP (29.3%), ahead of the Czech Republic (24.6%), Sweden (24.2%), Malta (23.4%), Belgium (23.0%), Austria (22.9%) and Romania (22.7%). At the opposite end of the scale, the lowest share of investment was registered by Greece (11.4% of GDP), followed by Portugal (14.8%), the United Kingdom (16.7%), Italy (17.0%) and Cyprus (17.2%).

Between 1996 and 2016, the ratio of investment (gross fixed capital formation) to GDP decreased in a majority of the EU Member States with the largest declines being observed in Slovakia (20.2% in 2016 vs.33.5% in 1996, or -13.3 pp), the Czech Republic (24.6% in 2016 vs. 27% in 2010 and 34% in 1996) and Greece (both -9.4 pp) as well as Portugal (-9.0 pp). Among the nine Member States which have seen the ratio rise between 1996 and 2016, the largest increases were recorded in Bulgaria (from 5.4% of GDP in 1996 to 19.1% in 2016, or +13.7 pp) and Ireland (+9.5 pp), followed by Sweden (+4.2 pp) and France (+2.1 pp).

More.

More ratios:
Total construction (gross) as percentage of GDP: 15.8% in 1996 vs. 9.6 in 2016

Dwellings as percentage of GDP: 2.8% in 1996 vs. 3.4% in 2016

Machinery and equipment and weapons systems (gross) as percentage of GDP: 15.6% in 1996 vs. 11.1% in 2016

Transport equipment (gross) as percentage of GDP: 2.4% in 1996 vs. 2.7% in 2016

ICT equipment (gross) as percentage of GDP: 2.5% in1996 vs. 1.9 in 2015 (data for 2016 not available)

Intellectual property (gross) as percentage of GDP: 2.3% in 1996 vs. 3.8% in 2016

Source: Eurostat http://appsso.eurostat.ec.europa.eu/nui/submitViewTableAction.do