Year	Percent
1950	11.18935
1955	12.99002
1960	6.40119
1965	9.35948
1970	10.5065
1975	10.69309
1980	9.17972
1985	7.16361
1990	7.48325
1995	7.89651
2000	8.98223
2005	9.29002
2010	6.80188
2015	4.85864
2020	5.37152
2025	6.16996
2030	7.40699
2035	7.15537
2040	6.64754
2045	5.98279
2050	5.75259
2055	6.11064
2060	6.6134
2065	6.79115
2070	6.55694
2075	6.16792
2080	5.92079
2085	5.9348
2090	6.08783
2095	6.17135
2100	6.09046