Year	Percent
1950	8.44238
1955	10.9835
1960	9.47815
1965	8.42726
1970	7.90121
1975	7.04558
1980	5.92473
1985	6.2633
1990	6.22049
1995	5.87393
2000	6.06675
2005	5.41121
2010	5.14366
2015	5.38732
2020	5.26341
2025	5.29987
2030	5.25143
2035	5.14036
2040	5.06602
2045	5.08414
2050	5.14331
2055	5.16914
2060	5.14382
2065	5.08836
2070	5.02096
2075	4.97993
2080	4.96229
2085	4.94789
2090	4.92119
2095	4.87233
2100	4.81319