Year	Percent
1950	12.31909
1955	6.1686
1960	8.80553
1965	9.80001
1970	10.05308
1975	8.56836
1980	6.70654
1985	6.99406
1990	7.22322
1995	7.99021
2000	8.26073
2005	5.79714
2010	4.49762
2015	4.81422
2020	5.52473
2025	6.5632
2030	6.32297
2035	5.87907
2040	5.3221
2045	5.15019
2050	5.49934
2055	5.97374
2060	6.15971
2065	5.99009
2070	5.69246
2075	5.52615
2080	5.5915
2085	5.76551
2090	5.85346
2095	5.7772
2100	5.59601