Year	Percent
1950	11.90478
1955	10.46617
1960	9.49381
1965	9.41042
1970	10.32176
1975	10.16075
1980	10.30944
1985	10.29853
1990	10.50757
1995	10.60156
2000	10.30356
2005	9.55236
2010	8.93326
2015	8.812
2020	8.42692
2025	7.90337
2030	7.58167
2035	7.17554
2040	6.72751
2045	6.34173
2050	6.08107
2055	5.8617
2060	5.69563
2065	5.53346
2070	5.37444
2075	5.23771
2080	5.1482
2085	5.08703
2090	5.05692
2095	5.01959
2100	4.9792