Year	Percent
1950	12.08993
1955	11.50541
1960	12.17724
1965	10.87661
1970	13.84137
1975	12.76889
1980	11.39937
1985	7.77607
1990	7.34538
1995	8.12371
2000	7.20082
2005	6.59389
2010	5.72819
2015	5.24993
2020	5.41164
2025	5.18817
2030	5.01302
2035	4.77503
2040	4.57517
2045	4.48743
2050	4.51801
2055	4.57952
2060	4.59864
2065	4.57685
2070	4.54602
2075	4.53637
2080	4.55685
2085	4.59355
2090	4.60867
2095	4.5907
2100	4.55048